question_answer

Vishal on entering his apartment, switched ON the tubelight, but it did not work. So, he called the electrician.

The electrician inspected the tubelight and suggested a replacement of the choke.

On replacing the choke, Vishal found the tubelight working.

(i) Identify the values of Vishal.

(ii) What is the function of a choke in AC circuit?

(iii) What is the effective resistance of a L-R circuit?

Answer:

(i) Vishal has concern for energy saving and the environment.

(ii) A choke coil reduces the current in the AC circuit without any heat loss.

(iii) The effective resistance of a L-R circuit,

                        \[Z=\sqrt{{{R}^{2}}+{{(\omega L)}^{2}}}\]