A coil when connected across a 10 V d.c. supply draws a current of 2 A. When it is connected across 10 V - 50 hz a.c. supply the same coil draws a current of 1 A. Explain why? Hence determine self inductance of the coil.

A student connects a long air cored - coil of manganin wire to a 100 V D.C. supply and records a current of 25 amp. When the same coil is connected across 100 V. 50 Hz A.C. the current reduces to 20 A , the reactance of the coil is :-

A current of 4 A flows in a coil when it is connected to a 12V dc source. When the same coil is connected to an a.c. source (12 V, 8 Hz), a current of 2.4 A flows in the coil. Calculate coefficient of self inductance (L) of the coil.

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

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

When a coil is connected to a 100 V D.C. supply, the current is 2 A. When the same coil is connected to A.C. source E=100sqrt(2) sin omega t , the current is 1 A. Find the inductive reactance used in the circuit.

When a coil is connected to a 100 V D.C. supply, the current is 2 A. When the same coil is connected to A.C. source E=100sqrt(2) sin omega t , the current is 1 A. Find the inductive reactance used in the circuit.

A current of 4A flows in a coil when connected to a 12V DC source. If the same coil is connected to a 12V, 50 rad//s AC source, a current of 2.4A flows in the circuit. Determine the inductance of the coil. Also, find the power developed in the circuit if a 2500muF capacitor is connected in series with the coil.