A uniformly wound solenoid coil of self ...

A uniformly wound solenoid coil of self inductance `1.8xx10^(-4)H` and resistance `6Omega` is broken up into two identical coils. These identical coils are then connected in parallel across a `12V` battery of negligible resistance. The time constant and steady state current will be

`3xx10^-5s`

`1.5xx10^-5s`

`0.75xx10^-5s`

`6xx10^-5s`

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