MHT CET 2024 Physics question
A rod of length ' ' is rotated with angular velocity ' ' about its one end, perpendicular to a magnetic field of induction 'B' . The e.m.f .induced in the rod is
Answer: (B)
Solution
Take a small element at distance from the pivot; its speed is , so . Integrating from 0 to : \dfrac{\ell^2}{2}$ =
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