Q156 / 180 · COMEDK 2012 · Physics

According to Faraday's law of electromagnetic induction an emf is induced in a coil, if

A
electric flux links with the coil
B
magnetic flux links with the coil
Correct answer
C
magnetic flux linked with the coil changes
D
electric flux linked with the coil changes

Solution

According to the Faraday's law of electromagnetic induction, whenever the magnetic flux linked with a coil changes continuously with time, an emf is induced in the coil. Its magnitude is equal to the rate of change of magnetic flux i.e., $$ e=N \frac{d \phi}{d t} $$ where, $N$ is the number of turns in the coil.

Hence, the correct answer is option: 'C'.

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