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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A current i0 is flowing through an L−R circuit of time constant i0. The source of the current is switched off at time t = 0. Let r be the value of (−di/dt) at time t = 0.Assuming this rate to be constant, the current will reduce to zero in a time interval of

A current i0 is flowing through an L−R circuit of time constant i0. The source of the current is switched off at time t = 0. Let r be the value of (−di/dt) at time t = 0.Assuming this rate to be constant, the current will reduce to zero in a time interval of

Current in a coil of self - inductance 2 H is increasing as i = 2 sin t^2. The amount of energy spent during the period when the current changes from 0 to 2 A is