| You can make an electromagnet from an iron nail and a length of bell wire. |
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Wrap the insulated wire round the nail. About 20 turns should make a good magnet. | ||
| Connect the wires to a battery. You can put a switch in the circuit. |
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Close the switch to complete the circuit and see if you can use the magnet to pick up some drawing pins. Find what happens when you switch off. |
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| The nail should pick up drawing pins when you switch on. |
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The pins should fall off when you switch off. |
