In series with `20 ohm` resitor a `5` henry inductor is placed. To the combination an e.m.f. of `5` volt is applied. What will b

In series with `20 ohm` resitor a `5` henry inductor is placed. To the combination an e.m.f. of `5` volt is applied. What will be the rate of increase of current at `t=0.25 sec`?
A. e
B. `e^(-2)`
C. `e^(-1)`
D. None of these

In series with `20 ohm` resitor a `5` henry inductor is placed. To the combination an e.m.f. of `5` volt is applied. What will be the rate of increase

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