Home Physics Current Electricity Mix When the key K is pressed at time t = 0, whi…
Physics Current Electricity Mix MCQ (Single Correct)

When the key K 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 = 2 mA at all t
B
I oscillates between 1 mA and 2mA
C
I = 1 mA at all t
D
At t = 0, I = 2 mA and with time it goes to 1 mA

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Verified by Experts
The correct answer is:
D

At time t = 0 i.e. when capacitor is charging, current

When capacitor is full charged, no current will pass through it,

hence current through the circuit

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