In the circuit shown in figure switch S...

In the circuit shown in figure switch S is closed at time t=0

Potential difference across `3Omega` resistance at time t is given by

A

`9e^(-21)`

B

`6e^(-2t)`

C

`3e^(-2t)`

D

`18(1-e^(-t//9))`

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The correct Answer is:

B

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