Question Detail

PHY 102 Test Compilation PHY 102 4 Objective Question

Question

The plane of a conducting wire loop is parallel to x-y plane. B field in z-direction. Which action will NOT change magnetic flux?
Options
A Decrease area of loop
B Increase strength of B
C Rotate loop about z-axis through center
Correct Answer
D Rotate loop about y-axis through center
Correct Answer

Option C is the correct answer.

Detailed Explanation

Rotation about z-axis (parallel to B) does not change angle between B and normal → flux unchanged.

Hint

Flux = BA cosθ, θ unchanged if rotation axis ∥ B.

Question Info