Q. 144.3( 3 Votes )

(i) When an AC so

Answer :

(i) The instantaneous power supplied to the capacitor is

∴ because average of sin2ωt is zero over the cycle.

(ii) As the capacitance is gradually reduced, so the capacitive reactance X_C will increase. (∵)

∴ the overall resistance will increase leading to the decrease in current. So, the brightness of the bulb reduces.

Rate this question :

How useful is this solution?

We strive to provide quality solutions. Please rate us to serve you better.

Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts

Dedicated counsellor for each student

24X7 Doubt Resolution

Daily Report Card

Detailed Performance Evaluation