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:

In given LR circuit the switch S is closed at time t=0 then

In given LR circuit the switch S is closed at time t=0 then