MHT CET 2024 Physics question
The coefficient of mutual induction is 2 H and induced e.m.f. across secondary is 2 KV. Current in the primary is reduced from 6A to 3A. the time required for the change of current is
Answer: (A)
Solution
The e.m.f. induced in the secondary is . Substituting H, V and A: , so $Δ t =
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