A closed circuit consists of a source of constant emf of 10V connected to a resistor of resistance 10 `Omega` and inductor of inductance 0.1 H. At time t=0, the inductance was abruptly decreased to 0.01 H. Find the current in the circuit at t=0, immediately after change (in A)

A closed circuit consits of a source of constant and E and a choke coil of inductance L connected in series. The active resistance of the whole circuit is equal to R . At the moment t = 0 the choke coil inductance was decreased abrupty eta times. FInd the current in the circuit as a function of time t .

An alternating e.m.f. of 200 V and 50 cycles is connected to a circuit of resistance 3.142 Omega) and inductance 0.01 H. The lag in time between the e.m.f. and the current is

A coil having a resistance of 50.0 Omega and an inductance of 0.5 H is connected to an AC source of 110 , v, 50Hz . The rms current in the circuit is

An inductor of inductance 2H and a resistance of 10 Omega are connected in series to an ac source of 1109 V, 60 Hz. The current in the circuit will be

An inductor of inductance 2H and a resistance of 10 Omega are connected in sereis to an ac source of 1109 V, 60 Hz. The current in the circuit will be

An alternating emf 200 virtual volts at 50 Hz is connected to a circuit resistance 1omega and inductance 0.01 H . What is the phase difference between the current and the emf in the circuit? Also, find the virtual current in the circuit.

An inductor of inductance 10 mH and a resistance of 5 is connected to a battery of 20 V at t = 0. Find the ratio of current in circuit at t =  to current at t = 40 sec

A closed circuit consists of a source of constant emf E and a choke coil of inductance L connected in series.The active resistance of the whole circuit is equal to R .It is in steady state.At the moment L=0 the choke coil inductance was decreased abruptly 4 times.The current in the circuit as a function of time t is E/R[1-xc^(-4tR//L)] .Find out value of x .

If a circuit made up of a resistance 1 Omega and inductance 0.01 H, an alternating emf of 200 voit at 50 Hz is connected, then find the phase difference between the current and the emf in the circuit.

A resistor is connected to a battery of emf 10 V and internal resistance 0.3 Omega . What is the resistance of the resistor to be inserted in the circuit for the circuit current 1.2A?