MHT CET 2023 Physics question
A conducting wire of length 2500 m is kept is east-west direction, at a height of from the ground. If it falls freely on the ground then the current induced in the wire is (Resistance of wire , acceleration due to gravity g = 10 m/, = x 10T)
Answer: (B)
Solution
A horizontal east-west wire falling freely cuts the horizontal component of the earth's field, so the induced emf is with at the ground. The current is . With m and : \dfrac{B_H× 2500\sqrt{2gh}}{25\sqrt2}$ =
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