A coil has inductance of 5 henry and resistance 20 ohm. An e.m.f. of 100 volt is applied to it. What is the energy stored in the magnetic field, when the current has reached its final steady value?

An ideal inductor of 1 H is connected across a resistance of 100 ohm as shown in the figure. What is the potential difference across the 100 ohm resistance, when the current has attained a steady value?

A coil of negligible resistance and inductance 0.02 henry is connected in series with a wire of zero inductance and resistance 12 ohm. An alternaitng e.m.f of 130 volt and 40 Hz is applied. Calculate the current, potential difference across the resistance and the angle of lag.

An inductance coil has a impedance of 100 ohm. When a.c. signal of frequency 1,000 hz is applied to the coil, the applied voltage leads the current by 45^@ . Calculate the self inductance of the coil.

A coil has resistance 30 ohm and inductive reactance 20 ohm at 50 Hz frequency. If an a.c. source of 200 V, 100 hz is connected across the coil, the current in the coil? Find the current of the coil

A circuit consists of a resistance 10 ohm and a capacitance 0.1muF . If an alternating e.m.f. of 100V, 50Hz is applied, calculate the current in the circuit.

A coil of inductance of 4//pi henry is joined in series with a resistance of 30 ohm. Calculate the current flowing in the circuit, when connected to a.c. mains of 200 volt and frequency 50 Hz.

A square loop of side 10 cm and resistance 0.70 ohm is placed vertically in the east -west plane. A uniform magnetic field of 0.10 T is set up across the plane in north-east direction. The magnetic field is decreased to zero in 0.7 sec. at a steady rate. Determine the magnitudes of induced e.m.f. and current during this time interval.

A coil has an inductance 0.7 H and is joined in series with a resistance of 220 ohm. Find the wattles component of the current in the circuit, when an alternating e.m.f. of 220 V at a frequency of 50 hz is supplied to it.

A n a.c. circuit that contians an inductance and a resistance has an impedance of 50 ohm at 100 Hz and an impedance of 100 ohm at 500 Hz. What are the values of inductance and the resistance of the circuit?