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A metallic square loop ABCD is moving in...

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

A

in `AD`, but not in `BC`

B

in `BC`, but not in `AD`

C

neither in `AD` nor in `BC`

D

in both `AD` and `BC`

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