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Rod PQ of length 2l is rotating about on...

Rod `PQ` of length `2l` is rotating about one end `P` in a uniform magnetic field `B` which is perpendicular to the plane of rotation of the rod . Point `M` is the mid- point of the rod. Find the induced emf between `M` and `Q` if the potential between `P` and `Q` is `100 V`.

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