A device Y is connected across an AC source of emf e =`e_osinomegat`.the current through y is given as i =`i _osin(omegat+(pi/2))`:-Draw graphs showinh variation of emf and current with time over one cycle of AC for Y.

A device Y is connected across an AC source of emf e = e_osinomegat .the current through y is given as i = i _osin(omegat+(pi/2)) :-Draw the phasor diagram for the device Y.

A device Y is connected across an AC source of emf e = e_osinomegat .the current through y is given as i = i _osin(omegat+(pi/2)) :-How doesthe reactance of the device Y vary with the frequency of the AC? Show graphically.

A device Y is connected across an AC source of emf e = e_osinomegat .the current through y is given as i = i _osin(omegat+(pi/2)) :-Identify the device Y and write the expression for its reactance.

A capacitor of 2 muF is connected to an AC source of emf e = 250 sin 100 pit . Write an equation for instantaneous current through the circuit and give reading of AC ammeter connected in the circuit.

Select and write the most appropriate answer. The instantaneous current in an A.C. circuit is given by I = 2 sin (omegat +theta) ampere. The r.m.s. value of the current is

A alternating e.m.f. e = 200 sin (100 pit) is connected across a resistor of resistance 10 Omega . Calculate the r.m.s. current flowing through the circuit.

In an ac circuit, the current is given by I = 5sin ( 100t-pi/2) and the ac potential is V=200sin(100)volt.Thenthepower consumption is

An AC source generating a voltage e = e_0 sin omega t is connected to a capacitor of capacitance C. Find the expression for the current i flowing through it. Plot a graph of e and i versus omega t .