Electrostatics Question 141
Question: If a dielectric substance is introduced between the plates of a charged air-gap capacitor. The energy of the capacitor will [MP PMT 2004]
Options:
A) Increase
B) Decrease
C) Remain unchanged
D) First decrease and then increase
Show Answer
Answer:
Correct Answer: B
Solution:
$ U=\frac{Q^{2}}{2C}; $ in given case C increases so U will decrease.
