In which case is there an induced electromotive force?

A. A permanent bar magnet is held inside a coil of wire

B. Field line's from earths magnetic field cross the area of a coil of wire

C. An electromagnet operating on direct current is held a second coil of wire

D. An electromagnet operating on alternating current is held inside a second coil of wire

Question

28 April, 21:35

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Answers (1)

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Melany Sutton · Answer 1

An electromagnet operating on alternating current is held inside a second coil of wire. (C)

I just took this test. That is the answer.