MHT CET 2024 Physics question
A metal rod of length 'l' rotates about one of its ends in a plane perpendicular to a magnetic field of induction 'B'. if the e.m.f. induced between the ends of the rod is 'e', then the number of revolutions made by the rod second is
Answer: (B)
Solution
The emf induced between the ends of a rod of length rotating about one end with angular speed in a perpendicular field is . With revolutions per second, , so $e =
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