CUET · PHYSICS · PYQ PAPER 2025
Three identical resistors are connected first in series to an electrical voltage V. Let I be the total current flowing in the circuit. These resistors are disconnected and again connected in parallel with the same source. Which of the following statements are true?
(A) The potential difference across each resistor is V/3 in series connection
(B) The potential difference across all three resistors in parallel connection is 3V
(C) The current flowing in each resistor in series connection is the same as I
(D) The current flowing through each resistor in parallel combination is equal to 31
Choose the correct answer from the options given below:
- A 1. (A) and (B) only
- B 2. (A) and (C) only
- C 3. (A), (C) and (D) only
- D 4. (B) and (C) only
Answer & Solution
Correct Answer
(C) 3. (A), (C) and (D) only
Step-by-step Solution
Detailed explanation
Let the resistance of each resistor be \( R \). Series connection: Equivalent resistance: \( R_s = 3R \) Total current: \( I = \frac{V}{3R} \) (A) Potential difference across each resistor: \( V_{each} = I \times R = \left(\frac{V}{3R}\right)R = \frac{V}{3} \). (C) Current…
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