A capacitor and resistor are connected in series with an ac source. If the potential difference across C and R are 120 V and 90V respectively and if the rms current of the circuit is 3A, calculate (i) impedance and (ii) power factor of the circuit.

A 25 µ F capacitor, a 0.1 henry inductor and a 25 Ω resistor are connected in series with an ac source with voltage. V = 310 sin 314t. (a) What is the frequency of the voltage ? (b) Calculate the reactance and impedance and (c) current in the circuit.

An inductor of reactance 10Ω and resistance 10Ω are connected in series and the combination is connected to 200V, 50Hz supply. Find (i) current through the circuit and (ii) inductance of the coil.

A 10 μF capacitor is connected across a 200 V, 50 Hz A.C. supply. Find the peak current through the circuit

A coil of self inductance 20mH is connected to an a.c source of 220v and of frequency 50Hz. What is the inductive reactance and r.m.s current in the circuit?

An inductor 20 mH, a capacitor 50 μF and a resistor 40 Ω are connected in series across a source of emf V=10sin340t. Calculate the power loss in A.C. circuit