If the plates of a parallel plate capacitor connected to a battery… | NEET 2024

Q14NEET 2024Medium

Energy Stored & Force between Plates

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:

Show answer and solution

Answer: (b)

Battery connected: $V$ constant; $d$ decreases so $C = \frac{\varepsilon_0 A}{d}$ increases (C true).
A: $Q = CV$ increases, true. B: $U = \frac{1}{2}CV^2$ increases, so false.
D: $\frac{Q}{V} = C$ changes, false. E: $QV = CV^2$ increases, true.
So the answer is (b) A, C and E only.

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