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Question

A conducting rod of length l is moving in a transverse magnetic field of strength B with velocity v. The resistance of the rod is R. The current in the rod is

A
BlvR
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B
Blv
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C
Zero
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D
B2v2l2R
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Solution

The correct option is A BlvR
Les consider, l= length of a conducting rod
B= transverse magnetic field
v= velocity
R= resistance
The motional emf induced in the conducting rod is given by
E=Blv
The current in the rod is
I=ER
I=BlvR
The correct option is A.

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