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 $



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