NEET Physics Current Electricity Questions Solved

PMT - 1995

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 

(1) I = 2 mA at all t

(2) I oscillates between 1 mA and 2mA

(3) I = 1 mA at all t

(4) At t = 0 , I = 2 mA and with time it goes to 1 mA

(4) At time t = 0 i.e. when capacitor is charging, current i=21000=2mA

When capacitor is full charged, no current will pass through it, hence current through the circuit i=22000=1mA 

Difficulty Level:

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