Electrostatics Question 112
Question: A capacitor is used to store 24 watt hour of energy at 1200 volt. What should be the capacitance of the capacitor [Kerala (Engg.) 2001]
Options:
A) $ 120mF $
B) $ 120\mu F $
C) $ 24\mu F $
D) $ 24mF $
Show Answer
Answer:
Correct Answer: A
Solution:
$ U=\frac{1}{2}CV^{2} $
So $ 24\times 60\times 60=\frac{1}{2}C{{(1200)}^{2}} $
therefore C=120 mF
