CUET · PHYSICS · PYQ PAPER 2025
Which of the following statements are correct?
(A) The resistance of a conductor and its resistivity both depend on temperature.
(B) For a conductor of 1 m length and of \( 1 \text{ m}^2 \) cross-sectional area, the resistance is equal to its resistivity
(C) Resistance and resistivity both depend on cross-sectional area
(D) The resistivity of two wires made of same material but of different dimensions is the same.
Choose the correct answer from the options given below:
- A (A), (B) and (D) only
- B (A), (D) and (C) only
- C (B), (D) and (C) only
- D (A) and (C) only
Answer & Solution
Correct Answer
(A) (A), (B) and (D) only
Step-by-step Solution
Detailed explanation
tatements (A), (B), and (D) are correct: resistance and resistivity vary with temperature, resistance equals resistivity when dimensions are unity \(\left(R=\rho \frac{1}{1}\right)\),and resistivity is independent of dimensions. Statement (C) is false because resistivity depends…
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