Which of the following could NOT induce an electric field in a loop of wire?
A) It sits in a very strong constant magnetic field.
B) It sits in a small magnetic field which is getting weaker over time.
C) It is moved closer and closer to the end of a bar magnet.
D) It is squeezed so the area of the loop gets smaller while it is exposed to a constant magnetic field.
E) It is rotated at a constant rate while it is exposed to a constant magnetic field.

Question

Quizplus · Accepted Answer

A constant magnetic field alone cannot induce an electric field in a loop of wire. It requires either a changing magnetic field or a varying area enclosed by the loop. Choice A indicates a constant magnetic field, so it cannot induce an electric field in the loop.

Which of the Following Could NOT Induce an Electric Field