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Physics-Motional EMF

NEET Physics Motional EMF MCQ Question

Type: MCQ-diagram based-Medium-Class 12

In the diagram shown above, what is the effect of increasing the speed of rotation of the wheel on the induced emf between the axle and the rim?

Question diagram
A

The induced emf increases.

B

The induced emf decreases.

C

The induced emf remains constant.

D

The induced emf becomes zero.

Correct Answer

Option A

Detailed Explanation

Increasing the speed of rotation increases the angular velocity, which in turn increases the induced emf according to the formula emf=12ωBR2\text{emf} = \frac{1}{2} \omega B R^2.

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