Question

An electric lamp market 220 V D.C. consumes a current of 10 A. It is connected to 250 V-50 Hz A.C. main through a choke. Calculate the inductance of the choke required.

Answer 1

Resistance of the lamp

\(= \frac{220 V}{10} = 22\) ohm.

Let ‘L’ be the Inductance of the lamp;