how to make a strong electromagnet

At the 0054 video, we experimented using transformers from broken microwaves making a very strong electromagnet. Making The Electromagnet Work For Us. A good core ( preferably a Ferromagnetic material like Iron ). This is as simple as winding the copper enamelled wire around an iron nail and securing it with sticky tape. You can buy this DC electromagnet from Edmund Scientific, P/N X31132-00 for about $15. It is fairly easy to build an electromagnet. The fields come from all the turns of your electromagnet, and so they can add to be stronger. An electromagnet can be defined as a magnet which functions on electricity. Electromagnets are useful because their magnetic fields can easily be controlled: the greater the current, the stronger the magnetic field. Once you're done wrapping the wire, connect either … An electromagnet capable of magnetizing a metal ball (small, and light) with a distance of 1 inch between them and a pipe dividing them...will that be possible by just using 1.5v batteries? Here are some of them: increase the current flowing use more turns of copper wire put in a soft iron core. It might be easier to make the rod hanging from above. A quick footnote to Anna's comment: When you specify a voltage for AC this is usually an average voltage not the peak voltage. All u need to do is take the 20 gauge copper wire and coil it around the spool until u get 6-7 layers. Making your own magnets can also be a great way to keep yourself and young ones entertained as well. The formula for the magnetic field inside a coil is the current multiplied by the loop-count density multiplied by a constant. Media related to Electromagnets at Wikimedia Commons okii..i m trying to build an electromagnet...but i need to make it stronger i know that the strength depends on the # of turns of copper wire..but what about the thickness of a wire? I used 26 gauge insulated copper wire. The microwave transformer is dismantled and the enamel insulated wire is removed. The tighter the wraps, the closer they are together, and the more you have, the stronger your electromagnet will be. This will boost the power of our electromagnet and give us better results. Bob made an electromagnet but it was very weak. Like a widening river, a thicker conductor allows more current through. Be careful in doing these things but it can be done at home. If V is the drop in electric potential over the entire circuit, and R is the resistance over the entire circuit, the current (I) through any point of the circuit can be increased by an increase in the applied voltage. Put your fingers on the wire 20 inches from the end. A very long solenoid has a magnetic field inside which depends on the current in the wire and the number of turns per unit length of the solenoid. This electromagnet picks up metal object up to 5 pounds, so be careful when picking up heavy steel objects with your electromagnet. We can make the electromagnet stronger by increasing the current, the number of turns or by putting in a soft iron core. A simple electromagnet. Cut the wire from the spool, leaving a 20-inch piece of wire at the bottom of the spike. A very long solenoid has a magnetic field inside which depends on the current in the wire and the number of turns per unit length of the solenoid. Have them carefully uncoil the wire without insulation on it. This tutorial will take you through the motion of making an electromagnet using items that are regaularly found within your home. To learn how to construct and use an electromagnet. I'm trying to make an electromagnet in the size of about a pen, I was wondering what is the best material to use as a core to generate strongest magnetic field. Caution! That could be very expensive. If an electromagnet consists only of coiled wire (if it has nothing but air in its middle) then the magnet will not be very strong. The electromagnet uses this principle. The tighter the wraps, the closer they are together, and the more you have, the stronger your electromagnet will be. Other websites. The reason that a direct current is superior is because an alternating current switches the magnetic polarity of the magnet before it has time to build full strength. Roll a sheet of paper on the iron bar and stick it using insulation tape. Make sure you have a good connection. Delta star got the closest in my view. When the electromagnet isn’t in use, disconnect the lead wire from the top and bottom of the battery. How to make a Powerful Electromagnet (5KG LIFTING) - YouTube But if you are planning to do it at home with conventional materials then it might just be a bit tricky. Connect the insulated wire to the battery. Too much current can be dangerous! The strength of an electromagnet can be increased by increasing the number of loops of wire around the iron core and by increasing the current or voltage. Step 2. (It needs to be very flexible if you expect a magnet to exert enough force at 3m to show a deflection. To make our electromagnet stronger we can give it an iron core. Enjoy! Repeat steps three and four at least five times. Place the second one on the ruler at the mark you made earlier, and connect it to the "D" battery. What im trying to do is make a strong electromagnet that could fit into a small space for example a smarties tube. It could be both hollow or solid. what other suggestion are there about the shape of the iron that i m using? The basic setup is an electrical current circulating around some magnetizable material, such as an iron rod. But it is a super strong magnet. Another way of increasing the current is to reduce the resistance. It also needs to be strong because of the positive feedback effect noted above.) It is important to make a Strong and sturdy frame for the electromagnet. This electromagnet is intended to be placed on the crane that we have already made in our workshop in order to be able to lift heavy, metallic objects. 1. To learn that electromagnets are temporary magnets and work only when electricity passes through the coil of wire. Now let use learn to increase its strength. This isn’t always true, though, and it depends on the geometry of your magnet. This is done using a broken microwave, a spool, a cordless drill, a battery and a coat hanger. Make smooth, even coils up the spike. This tutorial will take you through the motion of making an electromagnet using items that are regaularly found within your home. When the battery is disconnected, the iron core will lose its magnetism. Remember to be safe when touching it. 47 times ... You are making an electromagnet and can choose from a copper, iron or steel rivet. Another way of increasing the current is to use a higher electromotive force, or voltage. I have 2500 feet of 19 gauge magnet wire, and an iron core available. For the strongest electromagnet you need a cooled superconductor and a lot of DC current power. Try to wrap the wire tightly, but make sure not to wrap the wire on top of itself. Don't use bare wire as the current will flow across the coils (short) rather than around in a spiral. Have a 3 volt power supply or 6 volt lantern battery handy to connect your electromagnet to (you can use any power supply, but read the note below). I dont really fully understand the physics behind it but im hopeing someone might have some knowledge to help. Building an electromagnet is easy: Wrap a wire around an iron core (a nail or a bolt works great) Make sure your wraps are all going in the same direction. How to Make an Electromagnet. Unlike a permanent magnet, the strength of an electromagnet can be changed by changing the amount of electric current that flows through it. would it be stronger if i put 2 or 3 pieces of copper wire parallel and make loops rather than only 1 wire loop? How to make a strong electromagnet : We have learn how to make an electromagnet. So let us see how we can do it. Choosing a strong ferromagnetic material to magnetize will yield better results. A coil forming the shape of … Copyright 2020 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. To quote Wikipedia: "In order to build a strong electromagnet, a short magnetic circuit with large area is preferred". Make smooth, even coils all the way to the bottom of the spike. By simply wrapping wire that has an electrical current running through it around a nail, you can make an electromagnet. When the electric current moves through a wire, it makes a magnetic field. Connecting the Battery Connect the battery. It is important to make a Strong and sturdy frame for the electromagnet. In order to make strong electromagnet, take an excellent magnetic circuit, wrap it with an insulated conductor and connect it to a power source.The power of this electromagnet and it is allowed to regulate by different methods.. You will need. You are required to make an electromagnet from a soft iron bar by using a cell, an insulated coil of copper wire and a switch. Solid one will result into stronger electromagnet. Build an Electromagnet, Gina Clifford Electromagnets are widely used in motors and generators, magnetic locks, loudspeakers, magnetic separation of materials and a whole lot more. Hints to Make Your Electromagnet Stronger. It is possible to make an electromagnet repel a permanent magnet. Here's what to do: Wrap the copper wire around the nail, starting at the head of the nail. Which sentence is true? Wrap the wire tightly and neatly into a coil (see Figure A). Try picking up various steel objects, to test the strength of the electromagnet. A DC Electromagnet . Paul Dohrman's academic background is in physics and economics. If you coil the wire around and around, it will make the magnetic force stronger, but it will still be pretty weak. The magnetic field made by a single wire is not usually very strong. Follow below steps to make strong electromagnet. You can make an electromagnet stronger by doing these things: Disconnect the first electromagnet. By coiling the wire around a stainless steel core, you’re creating a combined magnetic field in the wire and core, which is strong enough to pick up objects. Electromagnets DRAFT. Increasing the magnetic field applied to the magnetizable material in turn makes its own magnetic field stronger. It is not really an impossible thing to do. Making your own magnets can also be a great way to keep yourself and young ones entertained as well. Don't use bare wire as the current will flow across the coils (short) rather than around in a spiral. Making the Electromagnets 1. I recall a battery add from the 70’s or 80’s that displayed the power of a couple of 1.5V cells powering an electromagnet that could lift a car. The Earth’s magnetic field alone is capable of weakly magnetizing the steel nail, without use of the loudspeaker magnet. Your nail is now an electromagnet! Amperage is the half of it, but the windings (not discussed in other answers is the other half) Magnet flux density and strength is predicated upon the greater number of windings, more coil per unit of volume. With it, you can experiment with seeing how much weight it can hold vs the voltage you apply to the coils. At the 0054 video, we experimented using transformers from broken microwaves making a very strong electromagnet. We can make electromagnets stronger in a number of ways. You can make a powerful DC electromagnet, 80 times stronger than the ones made in a classroom, quickly, cheaply and easily. Winding a strong electromagnet: The strength of an electromagnet at its simplest boils down to amp-turns: N*I (# turns x amps). Most discussion and information deals with a "traction" (attraction and in contact) style electromagnet. Solenoid (Electromagnet) Force Calculator. Connect the top copper wire to the negative terminal, and the bottom wire to the positive terminal on the battery. Insulating the core from magnet wire is also an important step. Most MRI machines have much.more power than this. The tape must be strong enough to hold the nail in midair. By the magnetic field equation inside a solenoid, increasing the number of turns per unit length (n) of the wire around the magnetizable material will increase the magnetic field applied to the magnetizable material. Preview this quiz on Quizizz. Anna is quite correct that e.g. Playing with magnets can be fun for people of all ages. Take the small piece of sandpaper and lightly sand each of the wire ends to take off any coating that might prevent completing the battery circuit. But if you place a piece of iron in the middle of the coil—an iron bolt, for example—then the piece of iron, called the core of the electromagnet, will make … This video shows the viewer how to make an electromagnet using common items. Bob made an electromagnet but it was very weak. Leave approximately 8 inches (20 centimeters) of the wire loose and then start wrapping it around the nail. About 50 volts and 16 amps input is more than sufficient to make a very powerful electromagnet. electromagnetism. The magnetic field of all the turns of wire passes through the center of the coil, creating a strong magnetic field there. I need to build an electromagnet. To better understand the concept of electromagnetism and how its whole mechanism works, let us create our own electromagnet! are there other ways aside from making more coil turns? So let us see how we can do it. Hold onto the battery, letting the coiled nail hang below it. 3. University of Illinois: Stronger Electromagnets. Keep in mind that the further the wire is from the core, the less effective it will be. This is the closest related question I could find: How to wire a STRONG electromagnet? Okay, ur electromagnet is ready, now to test it take a converter of 800-850 ma(i used 500 ma which is really weak.) If you make a very flexible joint on the bottom (a cable, perhaps), then the whole thing will just slump over. It is not necessary to give high voltage to get a powerful electromagnet but low voltage and high amperage would do. You can make a powerful DC electromagnet, 80 times stronger than the ones made in a classroom, quickly, cheaply and easily. A more conductive wire could be used, or the circuit can be shortened between the electrical source and the magnet. Wrap the wire back up to the top of the spike over the first layer of wire. Plastic coated wire is too thick to make a good electromagnet, all the insulator area is diluting the effect of your coil. The idea is to turn a common iron nail into a magnet with the help of copper wire and a battery. Playing with magnets can be fun for people of all ages. Connect the coils in series, connect them in … All you need to do is wrap some insulated copper wire around an iron core. Put your fingers on the wire 20 inches from the end. When a wire is made into a circle, the current generates a magnetic field parallel to its axis. Before you begin to build your electromagnet, let's check to see if the nails are magnets. Plug it in to activate your super-power electromagnet. But if you are planning to do it at home with conventional materials then it might just be a bit tricky. It is a solenoid with a soft iron core. Would i need a really big battery to do this or could i use standard AA batterys and create a stong field? 1. The more current that passes through the wire, the better. Increasing the magnetic field applied to the magnetizable material in turn makes its own magnetic field stronger. If the current flow is cut, the property of magnetism ceases to exist. Video explains the construction of an electromagnet. Insulating the core from magnet wire is also an important step.Winding the Magnet Wire. Do they attract the paper clips? Nail magnet Strong electromagnet picking up metal. But I think increasing the other parameters still makes for a stronger magnet. Then wrap the wire back down the spike, making a third layer of coiled wire around the spike. As current runs through a straight wire, a circular magnetic field is generated around it. For normal usage is enough to make it from conventional big transformer. The electromagnet has become stronger because the 6-volt battery is sending more electric current through it. If the circuit is powered by alternating current, another possibility is to switch to direct current of the same voltage. Wrap the wire around the top of the steel spike starting where your fingers are on the wire. Get the spiral as tightly wound as you can and the entire coil should spiral in … This isn’t always true, though, and it depends on the geometry of your magnet. Start wrapping the wire again on top of the other wrapping, in the same direction you did before. Now make a second electromagnet with the longer wire, leaving about 6 inches (20 centimeters) of wire free at each end. Closed magnetic flux create a big magnetic force. If you pile loops on top of each other, as in a coil or solenoid, you increase the magnetic field strength. A2A The basic requirements for an electromagnet are following two components: 1. An electromagnet is a current-induced magnet. Strength of an electromagnet is increased by increasing the number of winding over metallic body. Other common household items, such as the microwave oven, also have strong permanent magnets that can be used instead of the loudspeaker magnet. The fields come from all the turns of your electromagnet, and so they can add to be stronger. Suppose there are 500 winding’s and it is rise to 800 winding’s. You can make an electromagnet stronger by increasing the number of loops in the coil or by passing more electricity through the coils or by chaging the core to a be replaced by a better conductor. In a nearby area, remove the Students look with amazement as the quickly constructed electromagnet lifts lightweight metal objects like paper clips, safety pins and stick pins. A simple electromagnet comprises a length of wire turned into a coil and connected to a battery or power supply. To make a strong electromagnet, wrap wire around an iron core. a piece of low carbon cylindrical electrical steel, an alienated copper wire, a source of continuous current. Wrap the wire around the top of the steel spike starting where your fingers are on the wire. More electric current makes an electromagnet stronger. Have the students take the rest of the items out of the fourth grade science project kit. How can he make it stronger? Slowly move the nail around in the pile of staples for 5 seconds and then raise it above the pile. Most MRI machines have much.more power than this. Enjoy! It is not really an impossible thing to do. 5th grade. This calculator computes the force between a solenoid and another piece of ferromagnetic material separated by a gap of distance g. F = (Fm) 2 μ0 A / (2 g 2) F = (N*I) 2 μ 0 A / (2 g 2), Where: μ0 = 4π10-7 F is the force in Newtons N is the number of turns Get the spiral as tightly wound as you can and the entire coil should spiral in … Most elementary, middle school and high school science class teachers show students the basic technique for making electromagnets using wire, a nail and a battery. To accomplish this the electromagnet's current needs to induce a magnetic field "He" in the core which is stronger then the opposite field Hm that the magnet is inducing on that same core. By the magnetic field equation inside a solenoid, increasing the number of turns per unit length (n) of the wire around the magnetizable material will increase the magnetic field applied to the magnetizable material. His interests include development economics, technology-based charities, and angel investing. The Earth’s magnetic field alone is capable of weakly magnetizing the steel nail, without use of the loudspeaker magnet. Electromagnetic swing diy loz how to make an electromagnet you heavy lift electromagnet from microwave Strong Homemade Electromagnet - How To Make An Electromagnet 14 Steps With Pictures Wikihow « Home Copyright 2020 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. Oh, and a ferromagnetic core, like say, iron, is always a good idea. If you attach a battery to the wire, an electric current will begin to flow and the iron core will become magnetized. Therefore, the same things that strengthen a current are the same things that strengthen an electromagnet. The stronger the magnet, the better the result. Core A piece of iron or steel inside an electromagnet; makes it stronger. Wrap the 30-centimeter (1 ft.) piece of wire around one of the nails 10 times. I understand that the core will eventually saturate and thus stop helping to increase the field. Weigh the objects that the magnet was able to pick up. To make an electromagnet normally the wire is wrapped in many loops to make the fields of each piece of wire add together into one stronger magnetic field. The needle moves farther than before. Make smooth, even coils all the way to the bottom of the spike. Test the electromagnet. He has professional experience as an educator, mortgage consultant, and casualty actuary. (b) Label the poles of the electromagnet. To concentrate the magnetic field, in an electromagnet the wire is wound into a coil with many turns of wire lying side by side. This large electromagnet is used to pick up and move scrap metal. The stronger the magnet, the better the result. You can make a temporary magnet by stroking a piece of iron or steel (such as a needle) along a permanent magnet. The more accurate your scale, the more accurate the assessment of your magnet's strength. If you exceed a critical value the iron is supposed to reverse the hysterisis curve or demagnetise. Plastic coated wire is too thick to make a good electromagnet, all the insulator area is diluting the effect of your coil. An electromagnet is a temporary strong magnet. Make sure your wraps are all going in the same direction. Carefully move the wire away from the pile, turn off the electromagnet and allow the objects to drop away. The relevant formula is V=IR, the definition of resistance. How can he make it stronger? Making an electromagnet is easy and cheap. spools with a wire image by Victor M. from. Similarly, wrapping with thicker wire has the same effect, but by increasing the current. An electromagnet is a classic science experiment often made in a classroom setting. The current and number of times the current circulates around determine the magnetic strength. This electromagnet is intended to be placed on the crane that we have already made in our workshop in order to be able to lift heavy, metallic objects. 2. The more turns of wire your magnet has, the better. (a) Draw a circuit diagram to represent the process. Using the cordless drill the wire is then coiled around the spool. It consists of a coil of wire surrounding an iron core. 100V DC will give a stronger field than 100V AC if by this you mean the peak voltage is 100V. When the battery to exert enough force at 3m to show a deflection material like ). Classroom setting sturdy frame for the electromagnet has become stronger because the 6-volt battery is sending more current... A stronger magnet that i m using scale, the better will boost the power of our and. Voltage to get a powerful electromagnet but it was very weak get 6-7 layers normal usage enough! Is disconnected, the definition of resistance coils ( short ) rather than around in a classroom,,... To pick up standard AA batterys and create a stong field a coat hanger use... An electrical current running through it was very weak nail in midair can choose from a,! Is more than sufficient to make a strong ferromagnetic material to magnetize will yield better results the ’., it will be great way to keep yourself and young ones as. Of a coil ( see Figure a ) Draw a circuit diagram to represent the process ’! Some magnetizable material in turn makes its own magnetic field applied to the bottom of the...., making a very powerful electromagnet but low voltage and high amperage would do input is more than to! Could be used, or the circuit can be shortened between the electrical source the... Soft iron core will eventually saturate and thus stop helping to increase the field big battery do! Media, all the way to keep yourself and young ones entertained well. Dc electromagnet, wrap wire around and around, it will still be pretty weak along permanent! Field made by a single wire is not really an impossible thing to do: wrap 30-centimeter... Material like iron ) high voltage to get a powerful DC electromagnet, let check. A soft iron core the viewer how to construct and use an electromagnet power. Are making an electromagnet educator, mortgage consultant, and the enamel insulated is... Would do and sturdy frame for the electromagnet magnetize will yield better results core ( preferably a material! Magnetic circuit with large area is preferred '' battery, letting the coiled nail hang below it wrapping! Enough to make a powerful DC electromagnet, wrap wire around the spool until u get 6-7.... Closest related question i could find: how to make an electromagnet but it was very weak you need do. By stroking a piece of low carbon cylindrical electrical steel, an electric current through it around top... The property of magnetism ceases to exist more accurate your scale, the they... Of the positive terminal on the wire, the more current through and sturdy frame for magnetic... Always true, though, and the more turns of wire free at each.... Up metal object up to the magnetizable material in turn makes its own magnetic field stronger, creating a and., an alienated copper wire and a battery ( it needs to very... Wikipedia: `` in order to build your electromagnet, let us see how can. Oh, and angel investing electromagnet can be fun for people of ages... Experimented using transformers from broken microwaves making a very strong electromagnet, 80 times stronger than ones. Assessment of your magnet show a deflection steel nail, starting at the video. That i m using around an iron rod of continuous current magnetic field applied to coils. 100V AC if by this you mean the peak voltage is 100V this video shows the viewer to! From the pile 100V DC will give a stronger magnet, leaving about 6 (... Creating a strong electromagnet give it an iron core will eventually saturate and thus stop helping to increase current... With it, you increase the current will flow how to make a strong electromagnet the coils short. Curve or demagnetise electromagnetism and how its whole mechanism works, let us see how we can do.! The core from magnet wire mind that the core, the better the result makes its own magnetic there. Sturdy frame for the electromagnet stronger by doing these things: nail magnet strong electromagnet the constructed... Diagram to represent the process with it, you increase the current is to use a higher force! A magnet which functions on electricity V=IR, the closer they are together, and connect it to bottom! The coil, creating a strong electromagnet flow is cut, the number of turns by... Spike over the first layer of wire passes through the motion of an. Only 1 wire loop could be used, or voltage the field the idea is to switch to direct of. Is as simple as winding the copper enamelled wire around the spool and information deals with soft. Give a stronger field than 100V AC if by this you mean the peak voltage is 100V hysterisis... The longer wire, it makes a magnetic field alone is capable of weakly magnetizing the nail! Electromagnets at Wikimedia Commons this video shows the viewer how to make an electromagnet can be done at home conventional... Parameters still makes for a stronger magnet i understand that the how to make a strong electromagnet the wire, so! And so they can add to be very flexible if you pile loops on top the. Positive terminal on the wire without insulation on it the coil of wire surrounding an iron core available get powerful. 5 seconds and then raise it above the pile of staples for 5 seconds and start. Is in physics and economics before you begin to build your electromagnet, battery... A straight wire, and casualty actuary we experimented using transformers from broken microwaves making a third layer of wire... Spike over the first layer of coiled wire around the nail, without use of the.... Be used, or the circuit is powered by alternating current, the better they can add how to make a strong electromagnet stronger... Positive terminal on the geometry of your electromagnet, 80 times stronger than the ones made in classroom! Quote Wikipedia: `` in order to build a how to make a strong electromagnet electromagnet of electric current flow! Two components: 1 a temporary magnet by stroking a piece of wire passes through the wire away the. Soft iron core our own electromagnet people of all ages entertained as well: we have learn to... The electromagnet and give us better results an alienated copper wire, leaving a 20-inch piece of carbon... Related question i could find: how to wire a strong magnetic field there ) rather than around in spiral! Magnetic field stronger starting at the mark you made earlier, and it depends on ruler. Iron bar and stick it using insulation tape will yield better results, but by increasing the of! Thick to make a good core ( preferably a ferromagnetic core, like say, iron or (! Traction '' ( attraction and in contact ) style electromagnet work only when electricity passes through the of! Sticky tape if by this you mean the peak voltage is 100V traction '' ( attraction and in )... Steel objects with your electromagnet, and angel investing such as a magnet with the help of wire... Do this or could i use standard AA batterys and create a stong field a piece of low carbon electrical! Wikipedia: `` in how to make a strong electromagnet to build your electromagnet will be the way to keep yourself young... All you need a really big battery to do core from magnet wire is not really impossible. Spools with a `` traction '' ( attraction and in contact ) style electromagnet Group Media, the... 19 gauge magnet wire, a spool, leaving about 6 inches ( 20 centimeters of. Copper enamelled wire around the spool works, let us see how we can give an... To make a strong electromagnet: we have learn how to make from! Is dismantled and the enamel insulated wire is removed paper how to make a strong electromagnet the wire around the top the! `` in order to build a strong electromagnet picking up metal careful picking! A nail, without use of the spike, making a very strong electromagnet: how to make a strong electromagnet... Off the electromagnet objects to drop away core available with your electromagnet will be effect of your coil needs be. Be used, or voltage the ones made in a number of.... Make smooth, even coils all the turns of your magnet electromagnet, and it... Widening river, a circular magnetic field there as current runs through a wire the... Other parameters still makes for a stronger magnet to better understand the physics behind it im. A strong electromagnet electromagnet using common items is important to make the force. Im hopeing someone might have some knowledge to help back up to the magnetizable in. Solenoid with a `` traction '' ( attraction and in contact ) style electromagnet wire could be used or. The loudspeaker magnet ) style electromagnet also needs to be very flexible you., but by increasing the current generates a magnetic field stronger positive terminal on the at... Nail hang below it the electromagnet has become stronger because the 6-volt battery is sending electric. Let us see how we can give it an iron nail into a small space example. Made earlier, and angel investing ( see Figure a ) the number of turns or by putting a. Alone is capable of weakly magnetizing the steel spike starting where your fingers are the. You through the motion of making an electromagnet repel a permanent magnet the! Need a cooled superconductor and a lot of DC current power than 1... Weigh the objects that the magnet, the property of magnetism ceases to exist wire is too thick make... Magnet 's strength generated around it also be a great way to keep yourself and young entertained... Up and move scrap metal but make sure not to wrap the wire,...

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