Q. A 10 $\mu$F capacitor is charged to 500 V and then its plates are joined together through a resistance of 10$\ \Omega$. The heat produced in the resistance is
A) 500 J
B) 250 J
C) 125 J
D) 1.25 J
Explanation
(d) Heat produced = energy stored in capacitor
$= \frac{1}{2}CV^{2} = \frac{1}{2} \times \left( 10 \times 10^{- 6} \right) \times (500)^{2} = 1.25$ J
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.