Assertion : When a coil is joined to a cell, the current through the cell will be 10% less than its

                   steady state value at time t =τ loge 10, where τ is the time constant of the circuit.

Reason : When a coil is joined to a cell, the growth of current is given by i=i0e-t/τ

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Concept Videos :-

#17 | Growth of Current in Series LR Circuit
#18 | Comparison of RC & LR Circuit
#19 | Decay of Current in Series LR Circuit
#20 | Problems on LR Circuit: Set 1
#21 | Problems on LR Circuit: Set 2

Concept Questions :-

3.  i=i01-e-t/τ

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