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An 80 muC charge is given to the 4muF ca...

An `80 muC` charge is given to the `4muF` capacitor in the circuit shown in Fig. so thae upper plate A is positively charged. An unknown resistance R is connected in the left limb. As soon as the switch S in the central limb is closed, a current of 2 A flows through the `2Omega` resistor in the central limb. The capa citive time constant for the circuit is

A

`56mus`

B

`8mus`

C

`200mus`

D

`40mus`

Text Solution

Verified by Experts

The correct Answer is:
D
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