CUET · PHYSICS · PYQ PAPER 2025
Which of the following statements are correct?
(A) The emf of a cell depends on the internal resistance of the cell.
(B) The emf of a cell depends on the external resistance of the circuit.
(C) It is easier to start a car engine on a warm day than on a cold day.
(D) The temperature coefficient of resistance (α) of carbon is negative.
Choose the correct answer from the options given below:
- A (A), (B) and (C) only
- B (C) and (D) only
- C (B), (C) and (D) only
- D (A), (B) and (D) only
Answer & Solution
Correct Answer
(B) (C) and (D) only
Step-by-step Solution
Detailed explanation
The correct option is (C) and (D) only. (C) It is easier to start a car engine on a warm day than on a cold day: Correct. On a warm day, the internal resistance of the car battery is lower, and the chemical reactions occur more readily. Furthermore, engine oil is less viscous…
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