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When the key E is pressed at time t = 0,...

When the key `E` is pressed at time `t = 0`, which of the following statements about the current `I` in the resistor `AB` of the given circuit is true.

A

`I - 2mA` at all `t`

B

`I` oscillates between `I mA` and `2mA`

C

`I = 1mA` at all `t`

D

At `t = 0, I = 2mA` and with time it goes to `1 mA`

Text Solution

Verified by Experts

The correct Answer is:
D
At `t = 0`, capacitor behaves like short circuit so
`i = (2)/(1000) amp = 2mA`

later capacitor behaves like open circuit
`i = (2)/(1000+1000) amp = 1mA`
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