Home
Class 12
PHYSICS
When the key k is pressed at time t=0, w...

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

It is 2 mA at all times.

B

It is oscillates between 1 mA and 2 mA

C

It is 1 mA at all times.

D

A `t = 0, 1 = 2 mA` and with time it finally reduces to 1 mA.

Text Solution

Verified by Experts

The correct Answer is:
A
Initially, th e capacitance acts as short circuited and at steady state it acts as open circuited
. Hence, at `t = 0, i = (2)/(1xx10^(3))=2 mA`
At steady state, `i =(2)/(2xx10^(3))=1mA`
Hence, (D) is correct
Promotional Banner

Similar Questions

Explore conceptually related problems

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.

When the key K is presend at time t = 0 , then which of the following statements about the current I in the resistor PQ of given circuit is true ?

In the circuit shown, when the key k is pressed at time t = 0, which of the following statements about current I in the resistor AB is true

Which of the following statements about kinetic energy (K.E.) is true?

In the circuit shown below, the key is pressed at time t = 0 . Which of the following statements (s) is (are) true?

The current I_(1) (in A) flowing through the 1Omega resistor in the given circuit is

In the circuit shown below, the key is pressed at time t = 0. The correct statement is

In LR circuit, key (K) is closed at t = 0 . Which of the following quantities is not zero at time equal to time constant at circuit

Given the circuit : Which of the following is equivalent to the above circuit ? The true statement in the above is/are

The current I_(1) (in A) folowing through 8Omega resistor in the following circuit is: