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Question

A metallic square loop ABCD is moving in its own plane with velocity v in a uniform magnetic field perpendicular to its plane as shown in the figure. An electric field is induced
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A
in AD, but not in BC
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B
in BC, but not in AD
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C
neither in AD nor in BC
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D
in both AD and BC
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Solution

The correct option is D in both AD and BC
The square loop $$ABCD$$ is a metallic loop. So it consists of the free electrons. When the loop moves in a magnetic field, the free electrons in the $$AD$$ and $$BC$$ rod will experience the Lorentz force and they will move towards the ends creating a potential difference in the rods.
This induced emf leads to the electric field induced in the rods $$AD$$ and $$BC$$ of the square loop. But there will be no current flowing in the loop as ned potential difference is zero.

Physics

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