An LR circuit with a battery is connected at t=0. Which of the following quantities is not zero just after the connection?

An LR series circuit with a battery is connected at t=0. Which of the following quantities are zero just after the connection?

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

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

For the three circuit shown in figure- across the battery capacitors are connected in some combination. Which of the following is the correct order of combination :

For the three circuit shown in figure across the battery capacitors are connected in some combination. Which of the following is the correct order of combination:

Mark the incorrect option 1) When an uncharged capacitor is connected across the battery, just after the connections has been made, it behaves as short circuit 2) When capacitor is fully charged it behave as short circuit 3) When capacitor is fully charged it is behaving as open circuit 4) (A) & (C) both.

The time constant of an LR circuit is 40 ms. The circuit is connected at t= 0 and the steady state current is found ot be 2.0 A. Find the current at (a) t= 10 ms (b) t =20ms, (c ) t =100ms and (d) t = 1 s.