NEET 2024 — Physics solution

NEET2024Physics

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 increases.

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

Solution

With battery connected, $V$ is fixed. As $d$ decreases, $C = ε_{0} A / d$ increases (C true), $Q = C V$ increases (A true), $U = \frac{1}{2} C V^{2}$ increases (B false), $Q / V = C$ changes (D false), $Q V$ increases (E true).

$∴$ A, C and E only.

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