What does an iron nail wrapped with the copper wire an attached to a battery make ?
Metal magnet
Electromagnet
Permanent magnet
Compass
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11
Answer:
If you get some copper wire and coil it up, and connect its ends to a small battery, you can make a weak electromagnet! To make an even stronger electromagnet, coil your copper wire around a large iron nail. The nail is induced to become a magnet (magnetic induction), and makes the whole thing stronger...
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Answer:
Electromagnet...............................
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