How much does the maximum EMF produced by a generator a rotating coil) change if the area of the coil is doubled and the angular frequency halved?
A) It is the same.
B) It is increased by a factor of 2.
C) It is increased by a factor of 8.
D) It is decreased by a factor of 4.
E) It is impossible to tell given the information provided.

Question

Quizplus · Accepted Answer

The maximum EMF produced by a generator is proportional to the product of the area of the coil and the angular frequency. If the area is doubled and the angular frequency is halved, the product remains the same, so the maximum EMF does not change.

How Much Does the Maximum EMF Produced by a Generator