A coil having an inductance of `1/pi` henry is connected in series with a resistance of 300Ω. if 20 volt from a 200 cycle source are impressed across the combination, the value of the phase angle between the voltage and the current is :

Three condensers having capacities of 10 mu F , 20 mu F and 30 mu F respectively are connected in series and a potential difference of 220 volt is applied across the combination. Find the resultant capacity the charge on each plate and the potential difference across each condenser.

A coil of inductance 0.50 H and resistance 100 Omega is connected to a 240 V.50 Hz ac supply . What is the time lag between the voltage maximum and the current maximum ?

A set of three coils having resistances 10 Omega , 12 Omega and 15 Omega are connected in parallel. This combination is connected in series with series combination of three coils of the same resistances. Calculate the total resistance and current through the circuit, if a battery of emf 4.1 Volt is used for drawing current.

The alternating e.m.f. of e = e_0 sin omega t is applied across LR series circuit. The impedance and phase angle between current and voltage is

A coil of resistance 5 mu and self inductance 0.2 H is connected in series with a variable capacitor across 30 V, 50 Hz supply. At what value of capacitor resonance will occur? Find the corresponding current.

Find the impedance of the circuit containing an inductance of 2 henry, a capacitance of 6 mu F and a resistance of 100 Omega connected in series with an a.c. source of frequency 50 Hz. By what angle will the current lead or lag the applied e.m.f. in the circuit ?

A coil of 0.01 H inductance and IOmega resistance is connected to 200 V, 50 Hz AC supply. Find the impedance of the circuit and time lag between maximum alternating voltage and current.

An A.C.source of r.m.s. value85V and frequency 50Hz is connected in series with an inductance of 2H and a resistance of 10 Omega . Find the maximum current in the circuit.