Electrostatics Question 133
Question: The work done in placing a charge of $ 8\times {{10}^{-18}} $ coulomb on a condenser of capacity 100 micro-farad is [AIEEE 2003]
Options:
A) $ 32\times {{10}^{-32}}Joule $
B) $ 16\times {{10}^{-32}}Joule $
C) $ 3.1\times {{10}^{-26}}Joule $
D) $ 4\times {{10}^{-10}}Joule $
Show Answer
Answer:
Correct Answer: A
Solution:
$ W=\frac{Q^{2}}{2C}=\frac{{{(8\times {{10}^{-18}})}^{2}}}{2\times 100\times {{10}^{-6}}}=32\times {{10}^{-32}}J $
