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