Show that the current leads the voltage by an angle of `pi/2` in a purely capacitive a.c. circuit.

An alternating voltage E=E_0sinomegat is applied across an inductor L. Show by calculation that the current lags the voltage by a phase angle pi//2 (Assume inductor L has no resistance).

Show that the current, in C R circuit leads the voltage by a phase angle tan^-1(1/(omegaCR))

An ac source e=E_0sinomegat is applied across an ideal inductor of inductance L. Show mathematically that the current lags the voltage by a phase angle of pi/2 .

Statement I: the alternating current lags behind the voltage by a phase angle pi/2 when ac flows through an inductor, Statement II: The inductive reactance increases as the frequency of ac source decreases.

A circuit draws 280 W from a 110V, 60Hz ac line. The current lags the voltage and the power factor is 0.5. Find the value of a capacitance which can be connected in series to make the power factor of the circuit unity.

A pure inductive coil is connected between the sides of an AC source. Show mathematically that the current will lag behind the AC voltage by a phase-difference of pi/2

A capacitor, a resistor of 5Omega and an inductor of 50mH are in series with an ac source marked 100V,50Hz. It is found that the voltage is in phase with the current. Calculate the capacitance of the capacitor and the impedance of the circuit.

Show that a purely capacitative ac circuit dissipates no power.

A derive 'X' is connected to an ac source V=V_0sinomegat .The variation of voltage ,current and power in one cycle is shown in the following graph: Which of the curves A,B and C represent the voltage , current and the power consumed in the circuit ? Justify your answer .

Find the value of the phase difference between the current and the voltage in the series LCR circuit shown below. Which one leads in phase:current or voltage?