MHT CET 2025 Physics question
Initially a rectangular coil with length vertical is moving out with constant velocity 'v' in a constant magnetic field 'B' towards right. Now the same coil is rotated through in same plane in magnetic field B and the coil is moving with the same velocity v. The magnitude of induced e.m.f. is now
Answer: (B)
Solution
While the coil is moving out of the field, only the vertical side that cuts the field boundary produces a motional e.m.f., given by (the top and bottom sides move parallel to their own length, so no e.m.f. is induced across them). Initially the vertical side is the length of the
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