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Question 1 of 8
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★☆☆ Beginner
What is the essential condition required for an electromotive force (e.m.f.) to be induced in a coil of wire?
A
A strong permanent magnet must be kept stationary inside the coil.
B
The coil must be connected to a high-voltage power supply.
C
The magnetic flux linkage through the coil must be changing.
D
The coil must be made from a magnetic material such as soft iron.