Electrostatics Question 31
Question: A capacitor of capacity $ C $ has charge $ Q $ and stored energy is $ W $ . If the charge is increased to $ 2Q $ , the stored energy will be [MP PET 1990]
Options:
A) $ 2W $
B) $ W/2 $
C) $ 4W $
D) $ W/4 $
Show Answer
Answer:
Correct Answer: C
Solution:
$ W=\frac{Q^{2}}{2C} $
therefore $ W’=4W $
