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  • 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. <img alt="" src="https://cdn.entrance360.c

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.

Option: 1

2mA at all time


Option: 2

Oscillates between 1mA and 2mA


Option: 3

1mA at all time


Option: 4

At t = 0, I = 2mA and with time it finally reduces to 1Ma


Answers (1)

best_answer

Initially the capacitance acts as short circuited and at steady it acts as open circuit.

\mathrm{\text { Hence, at } \mathrm{t}=0, \mathrm{i}=\frac{2}{1 \times 10^3}=2 \mathrm{~mA}}

\mathrm{\text { At steady state } \mathrm{i}=\frac{2}{2 \times 10^3}=1 \mathrm{~mA}}

Posted by

Deependra Verma

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