The area and the number of turns in a loop of wire are doubled. Assuming that all the other parameters remain the same, what happens to the induced emf in that loop of wire?
A) It is doubled.
B) It is reduced by a factor of 2.
C) It is reduced by a factor of 4.
D) It is quadrupled.
E) It stays the same.

Question

Quizplus · Accepted Answer

The induced emf in a loop of wire is proportional to the product of the area and the number of turns. Doubling both the area and the number of turns results in a fourfold increase in the induced emf.

The Area and the Number of Turns in a Loop