Find direction of instantaneous induced current in secondary circuit for the following changes in primary circuit :-
(a) Key is just closed
(b) Some time after the closing of key
(c) Key is just opened

Shown in the figure is an R-L circuit. Just after the key (K) is closed

Shown in the figure is an R-L circuit. Just after the key (K) is closed

The charge flowing across the circuit on closing the key K is

In the circuit shown below , what will be the reading of the ammeter long time after closing the key ?

In the circuit shown in the figure, what is the value of I_(1) just after pressing the key K?

In the circuit shown in the figure, what is the value of I_(1) just after pressing the key K?

Find out current in the circuit and charge on capacitor which is initially uncharged in the following situations Just after the switch is closed

A certain circuit consists of a DC source with emfan induction coil L1 , and a key K1 . No resistance is present in the circuit. Another coil, L2 , which is connected electrically to a resistor R through a key K2 , is fastened to L1 . At some moment in time key K1 is closed. After a certain tirne interval K2 is closed. flow do the current in the primary circuit (the one containing), the induction emf in the secondary circuit (the one with L2 and R ), and the current in the secondary circuit vary with time ?

In which of the following circuits is the current maximum just after the switch S is closed?