A current-carrying coil of an insulated wire wrapped around a piece of iron is called an ___________________.

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A Amplifier
B Electromagnet
C Electric fuse
D Element

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Answer: B. Electromagnet

This is the definition of an electromagnet, which utilizes the magnetic effect of electric current to create a temporary magnet.

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A current-carrying coil of an insulated wire wrapped around a piece of iron is called an ___________________.

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