Question

(a) An air core coil and an electric bulb are connected in series across a 220 V, 50 Hz a.c. source. The bulb glows with some brightness. How will the
glow of the bulb be affected on introducing a capacitor in series in circuit? Justify your answer.
(b) What is the maximum value of power factor? When does it occur?

Answer 1

Answer:

Text Solution

remains same

increases

decrease

first decrease then increase

Answer :

C

Solution :

If an iron rod is puts in the coil, then the intensity of light is of bulb will decrease because the iron rod increase the resistance.