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A coil having inductance and L and resis...

A coil having inductance and L and resistance R is connected to a battery of emf `in` at `t = 0`. If `t_(1)` and `t_(2)` are time for `90%` and `99%` completion of current growth in the circuit, then `(t_(1))/(t_(2))` will be-

A

`1 : 2`

B

`2: 1`

C

`(log_(e) 10)/(2)`

D

`2 log_(e) 10`

Text Solution

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The correct Answer is:
A
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