Electrostatics Question 131
Question: A 10 micro-farad capacitor is charged to 500 V and then its plates are joined together through a resistance of 10 ohm. The heat produced in the resistance is [Orissa JEE 2003]
Options:
A) 500 J
B) 250 J
C) 125 J
D) 1.25 J
Show Answer
Answer:
Correct Answer: D
Solution:
$ U=\frac{1}{2}CV^{2}=\frac{1}{2}\times 10\times {{10}^{-6}}\times {{(500)}^{2}} $
$ =1.25J $
