CUET · PHYSICS · PYQ PAPER 2025

A 10 V battery of negligible internal resistance is being charged by a 200 V battery with a resistance of \( 38 \Omega \) in series. The value of the current in the circuit is

A 5.5 A
B 5 A
C 5.26 A
D 0.26 A

Verified Solution

Answer & Solution

Correct Answer

(B) 5 A

Step-by-step Solution

Detailed explanation

\( I = \frac{V_{charging} - V_{charged}}{R} \) \( I = \frac{200\,V - 10\,V}{38\,\Omega} \) \( I = \frac{190\,V}{38\,\Omega} \) \( I = 5\,A \)

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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Match List I with List II.

LIST I	LIST II
A. Autogamy	I. Pollination between two flowers present on different plant of the same species
B. Syngamy	II. Pollination between two flowers of the same plant
C. Xenogamy	III. Pollination within the same flower
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Choose the correct answer from the options given below:

CUET 2023 Medium

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y	1	2	3	4	5
P(y)	2k	3k	k	4k	5k

List - I	List - II
(A) P(y > 2)	(I) \(\frac{2}{5}\)
(B) k	(II) \(\frac{2}{3}\)
(C) \(P(y \leq 3)\)	(II) \(\frac{8}{15}\)
(D) \(P(2 \leq y \leq 4)\)	(II) \(\frac{1}{15}\)