Electrostatics Question 11
Question: A condenser of capacity $ 50\mu F $ is charged to $ 10\ volts $ . Its energy is equal to [CPMT 1978; MP PET 1994; MP PMT 2000]
Options:
A) $ 2.5\times {{10}^{-3}}\ joule $
B) $ 2.5\times {{10}^{-4}}\ joule $
C) $ 5\times {{10}^{-2}}\ joule $
D) $ 1.2\times {{10}^{-8}}\ joule $
Show Answer
Answer:
Correct Answer: A
Solution:
$ U=\frac{1}{2}CV^{2}=\frac{1}{2}\times 50\times {{10}^{-6}}\times {{(10)}^{2}}=2.5\times {{10}^{-3}}J $
