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Topic: Capacitors, series and parallel combination, parallel plate capacitor with/without dielectric· Electrostatics

If the plates of a parallel plate capacitor connected to a battery are moved close to each other, thenA. 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 rem…

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:

1. A, B and C only

2. A, B and E only

3. A, C and E only

4. B, D and E only

1 answer

Best answer

Answer: 3. A, C and E only

Key idea: The capacitor stays connected to the battery, so the voltage \(V\) stays fixed. Moving the plates closer reduces \(d\).

  • C: \(C=\frac{\epsilon_0A}{d}\) increases. True.
  • A: \(Q=CV\) increases. True.
  • B: \(U=\frac12CV^2\) increases, so it does not decrease. False.
  • D: \(\frac QV=C\), which changes. False.
  • E: \(QV=CV^2\) increases. True.

A, C and E only: option 3.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report
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