Electrostatics Question 148

Question: If the potential of a capacitor having capacity of 6 mF is increased from 10 V to 20 V, then increase in its energy will be [Pb. PET 2002]

Options:

A) 12 x10^6 J

B) 9 x10^4 J

C) 4 x10^6 J

D) 4 x10^9 J

Show Answer

Answer:

Correct Answer: B

Solution:

The increase in energy of the capacitor

ΔU=12C(V22V12)=12(6×106)(202102)

=3×106×300=9×104J



NCERT Chapter Video Solution

Dual Pane