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 $



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