Electrostatics Question 4
Question: The capacity of a condenser is $ 4\times {{10}^{-6}} $ farad and its potential is$ 100volts $ . The energy released on discharging it fully will be [AFMC 1988; AIIMS 1980, 84]
Options:
A) $ 0.02\ Joule $
B) $ 0.04Joule $
C) $ 0.025Joule $
D) $ 0.05Joule $
Show Answer
Answer:
Correct Answer: A
Solution:
$ U=\frac{1}{2}CV^{2}=\frac{1}{2}\times 4\times {{10}^{-6}}\times {{(100)}^{2}}=0.02J $
