A square coil ABCD lying in x-y plane wi...

A square coil ABCD lying in `x-y` plane with its centre at origin. `A` long straight wire passing through origin carries a current `i=2t` in negative z-direction. The induced current in the coil is

clockwise

anticlockwise

alternating

zero

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The correct Answer is:

Magnetic lines are tangential to the coil as shown in figure. Thus net magnetic flux passing through the coil is always zero or the induced current will be zero.

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