An a.c. voltage `E = E_0 sin omegat`is applied across an inductance L. Obtain an expression for the current in the circuit and hence obtain the phse of the current flowing w.r.t the applied voltage.

An a.c. voltage E = E_0 sin omegat is applied across an inductance L. Obtain an expression for the current in the circuit and hence obtain inductive reactance of the circuit .

An a.c. voltage E = E_0 sin omegat is applied across a series combination of an inductor L, a capacitance C and a resistor R. Use the phasor diagram solution to obtain expressions for the impedance of the circuit.

An a.c. source generating a voltage E = E_0 sin omegat is connected to a capacitor of capacitance C. Find the expression for current I, flowing through it. Plot a graph of E and I versus omegat to show that the current is pi//2 ahead of the voltage.

An alternating voltage of frequency f is applied across LCR circuit. Let f_r be the resonance frequency for the circuit. Will the current in the circuit lag, lead or remain in phase with the applied voltage when f>f_r ? Explain your answer in each case.

An a.c. Voltage is applied to a resistance R=30 Omega and an inductor L in series. If the inductive reactance is also 30 Omega , the phase difference between the applied voltage and the current in the circuit is

An alternating voltage E=E_0 sin omegat is applied to a circuit containing a resistor R connected in series with a black box. The current in the circuit is found to be I = I_0 sin(omegat+pi/4) . State whether the element in the black box is a capacitor or indutor.

An alternating e.m.f is supplied through apure inductance. Investigate the relationship between current flowing through it and the applied e.m.f.

A voltage V = V_0 sinomegat is applied to a series LCR-circuit. Derive the expression for the average power dissipated over a cycle. Under what condition no power is dissipated even though the current flows through the circuit.

An alternating voltage E = 200 sin 300 t is applied across a series combination of resistance of 10 ohm and an inductor of 800 mH. Calculate peak value of current in the circuit