MHT CET 2022 Physics question
An average induced emf of 0.5 V appears in a coil when the current in it is changed from 10 A in one direction to 10 A in opposite direction in 0.8 second. The self inductance of the coil is
Answer: (B)
Solution
Taking the initial direction as positive, the current changes from A to A, so A in s. The average induced emf is $|e| =
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