. What is choke coil ?

What is a choke coil ?

When an alternating voltage of 100V, 50 Hz is applied to a choke coil, it takes a current of 10 A and the power is 500 W. What is the choke coil?

A choke coil has.

Why is choke coil needed in the use fluoresent tube with ac mains ?

What is coil of life ?