A resistance R and an inductance L are connected in series in an a.c. circut. If `omega` is the angular frequency of the source, then the power factor is given by

Resistor of resistance R and capacitor of capacitance C are connected in series to an AC source of angular frequency omega . Rms current in the circuit is I. When frequency of the source is changed to one - third of initial value keeping the voltage same then current is found to be halved. Find the ratio of reactance of capacitor to that with resistance at the original frequency omega .

A capacitor with capacitance C and a coil with active resistance R and inductance L are connected in series to a source of sinusoidal voltage of frequency omega . Find the phase difference between the current fed to the circuit and the source voltage.

In an A.C. circuit, a resistance R=40 Omega and an inductance L are connected in series. If the phase angle between voltage and current is 45^(@) , then the value of the inductive reactance will be

A choke coil of resistance R and inductance is connected to an ac. source of frequency f and peak voltage V If angular frequency will increase then, the average power dissipated in the choke

An inductor has a resistance R and inductance L .It is connected to an A.C source of e.m.f E_(v) and angular frequency omega , then the current I_(v) in the circuit is

A resistance (R), inductance (L) and capacitance (C) are connected in series to an ac source of voltage V having variable frequency. Calculate the energy delivered by the source to the circuit during one period if the operating frequency is twice the resonance frequency.

An inductor of inductance L and resistance R is connected of A.C. circuit having angular frequency of omega . The value of quality factor Q is ……

A capacitor of 100 muF , a resistor of 20 Omega and an inductor of inductance L are connected in series with an a.c. source of frequency 50 Hz. Calculate the value of inductance L of the inductor, if phase angle between current and voltage is zero.

A capacitor of 100 muF , a resistor of 20 Omega and an inductor of inductance L are connected in series with an a.c. source of frequency 50 Hz. Calculate the value of inductance L of the inductor, if phase angle between current and voltage is zero.

A coil of inductance L and resistance R is connected to an A.C. source of V volt. If the angular frequency of the A.C. source is equal to omega "rads"^(-1) , then the current in the circuit will be ………