How much does the maximum EMF produced by a generator a rotating coil) change if the area of the coil is quadrupled?
A) It is the same.
B) It is increased by a factor of 16.
C) It is increased by a factor of 8.
D) It is increased 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 area of the coil. If the area is quadrupled, the maximum EMF will also be quadrupled since EMF is directly proportional to area. Therefore, the answer is (D) increased by a factor of 4.

How Much Does the Maximum EMF Produced by a Generator