Which of these is an example of electromagnetic induction?

A. A moving charge produces a magnetic and electric field.

B. A current through a wire produces a magnetic field.

C. A changing magnetic field induces an electromotive force.

D. A current passing through a resistor uses power IR^2.

Question

Which of these is an example of electromagnetic induction?

A.       A moving charge produces a magnetic and electric field.

B.       A current through a wire produces a magnetic field.

C.       A changing magnetic field induces an electromotive force.

D.       A current passing through a resistor uses power IR^2.

michele_laino · Answer

it is option C, for example we have this situation:
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when the magnet bar is moved to right and to left, an induced voltage will appear across the loop wire