Q. If the plates of a parallel plate capacitor connected to a battery are moved close to each other, then A. the charge stored in it, increase. B. the energy stored in it, decreases. C. its capacitance increases. D. the ratio of charge to its potential remains the same. E. the product of charge and voltage increases. Choose the most appropriate answer from the options given below:
A) B, D and E only
B) A, B and C only
C) A, B and E only
D) A, C and E only
Explanation
[Solution by Claude - not from source] $V$ is fixed. $C=\epsilon_0A/d$ increases, $Q=CV$ increases, $U=\frac12CV^2$ increases, $Q/V=C$ changes, $QV$ increases. So A, C, E. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.