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Assertion : The switch S shown in the fi...

Assertion : The switch `S` shown in the figure is closed at `t = 0`. Initial current flowing through battery is `(E)/(R + r)`
Reason : Initially capacitor was uncharged, so resistance offered by capacitor at `t = 0` is zero

A

If both assertion and reason are ture and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
A
(a) Charge on capacitor `q = CE (1 - e^(-t//CR_(eq)))`
`:. I = (dq)/(dt) = (E)/(R_(eq)) e^(-t//CR)`
at `t = 0`
`I = (E)/(R_(eq)) = (E)/(R + r) implies` Resistance offered by capacitor is zero.
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