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 , where $\mathrm{\tau }$ is the time constant of the circuit.

Reason : When a coil is joined to a cell, the growth of current is given by $\mathrm{i}={\mathrm{i}}_{0}{\mathrm{e}}^{-\mathrm{t}/\mathrm{\tau }}$

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 :-

LR circuit

3.  $\mathrm{i}={\mathrm{i}}_{0}\left(1-{\mathrm{e}}^{-\mathrm{t}/\mathrm{\tau }}\right)$

Difficulty Level:

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