1.Strip both ends of the wire. Ensure that there exists about 50 % an inch roughly of bare wire exposed. Other wire should remain shielded with the plastic sheathing. 2.Wrap the wire throughout the nail as tightly as you're able. Start with the head from the nail, and work your way as a result of the end. The tighter you wrap the wire, the stronger your magnetic field will probably be. Do not overlap the wire, but merely make Rubber Magnet(strip) as many single-file coils round the nail as you're able. Leave roughly half a centimeter right at the end in the nail tip. 3.Wrap among the bare ends from the wire around the positive terminal with the battery. Next, wrap another bare wire around the negative terminal on the battery. You can have a functioning magnet. 4.Move the nail upset a paperclip or metal filings to verify how the magnet is functioning properly. Neodymium Magnet Repeat Steps 1-3 with another battery, some wire and a nail. With two magnets, now you can be certain which you have designed a negative charge with your magnet. 5.You can use a Gaussmeter to verify which end with the nail posesses negative charge, however, these units are extremely expensive. A cheap method to determine the negative and positive charge has been a compass.Bring the compass near one end from the nail, watching the needle. It will point towards "North" whether it is positive, and "South" if it is negative.