Electromagnets use electricity to form a magnet. You can increase or decrease the strength of the field by changing the amount of coils in the wire.

Back to our original dilemma: How are you going to pick up all of those BBs?

. . .with an electromagnet, of course!

You need just four household items to make your electromagnet:
1. a D size battery
2. masking or electrical tape
3. an insulated wire
4. an iron bolt

Take the iron bolt and wrap the wire around it several times. Remember: the more coils, the stronger the magnet. Tape the ends of the wire to each end of the battery. Be careful because the ends of the battery get pretty hot. Voila! You have an electromagnet. Now you can clean up those BBs in no time at all!


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