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A metal rod moves at a constant velocity...

A metal rod moves at a constant velocity in a direction perpendicular to its length. A constant, uniform magnetic field exists in space in a direction perpendicular to the rod as well as its velocity. Select the correct statements(s) from the following

A

The entire rod is at the same electric potential

B

There is an electric field in the rod

C

The electirc potential is highest at the centre of the rod and decrease towards its ends

D

The electirc potential is lowest at the centre of the rod and decrease towards its ends

Text Solution

Verified by Experts

The correct Answer is:
B
When the rod moves, a potential defference is induced between the two ends of the rod. Hence option (a),(c) and (d) are wrong. Due to the p.d. an electric field `E = |(dv)/(dx)|` is produced in the rod. Hence option (b) is the correct option.
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MARVEL PUBLICATION-ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS -TEST YOUR GRASP - 16
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