CUET · PHYSICS · PYQ PAPER 2023

The capacitance of capacitor increases when :
(A) its charge increases
(B) its supply voltage decreases
(C) common area of the plates increases
(D) separation between the plates decreases
Choose the correct answer

A (A) and (B)
B (A), (B) and (C)
C (C) and (D)
D (A), (B) and (D)

Verified Solution

Answer & Solution

Correct Answer

(C) (C) and (D)

Step-by-step Solution

Detailed explanation

\(C = \frac{\epsilon A}{d}\) Capacitance \(C\) increases with increasing plate area \(A\). Capacitance \(C\) increases with decreasing plate separation \(d\). The correct answer is (C) and (D).

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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The capacitance of capacitor increases when :(A) its charge increases(B) its supply voltage decreases(C) common area of the plates increases(D) separation between the plates decreasesChoose the correct answer

Step-by-step Solution

The capacitance of capacitor increases when :
(A) its charge increases
(B) its supply voltage decreases
(C) common area of the plates increases
(D) separation between the plates decreases
Choose the correct answer