Electrostatics Question 84
Question: A parallel plate capacitor has circular plates of $ 0.08m $ radius and $ 1.0\times {{10}^{-3}}m $ separation. If a P.D. of $ 100\ volt $ is applied, the charge will be [ISM Dhanbad 1994]
Options:
A) $ 1.8\times {{10}^{-10}}C $
B) $ \text{1}\text{.8}\times \text{1}{{\text{0}}^{-\text{8}}}C $
C) $ \text{1}\text{.8}\times \text{1}{{\text{0}}^{-\text{20}}}C $
D) None of these
Show Answer
Answer:
Correct Answer: B
Solution:
$ Q=CV=\frac{\pi {{(0.08)}^{2}}{\varepsilon _{0}}}{1\times {{10}^{-3}}}\times 100=1.8\times {{10}^{-8}}C $
