Question Detail

PHY 102 Electromagnetic Induction 1 Objective Question

Question

To create an EMF in a conducting loop situated within a magnetic field, which of the following actions would not typically induce an EMF according to the principles discussed?
Options
A Changing the area of the loop.
B Changing the strength of the magnetic field.
C Changing the angle between the loop's area vector and the magnetic field.
D Maintaining a constant magnetic field and a stationary loop with unchanging area.
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

Page 24 explains that EMF can be created by changing the area, the magnetic field, or the angle between them (all leading to a change in magnetic flux). If all these factors are constant, there is no change in magnetic flux, and thus no induced EMF. Moving the loop through a non-uniform field would also cause a change in flux and induce an EMF.

Hint

Induced EMF requires a change in magnetic flux (ΦB).

Question Info