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Question

A coil of square shape (4 m×4 m) is placed in magnetic filed as shown in the figure. Find induced emf in loop.

A
32 volt
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B
8 volt
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C
16 volt
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D
zero
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Solution

The correct option is D zero
emf=dϕBdtϕB=B.A=BAcosθ
=(2t)(16)cos90
B & A are perpendicular
ϕB=0
emf=dϕdt=0

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