CUET · PHYSICS · PYQ PAPER 2025
Which of the following statements are correct?
(A) Metals obey Ohms law at constant temperature.
(B) The resistivity of the metals depends on temperature.
(C) The conductivity of the metals is independent of temperature.
(D) The number of electrons per unit volume in a metal is independent of temperature.
Choose the correct answer from the options given below:
- A (A), (B) and (D) only
- B (A), (B) and (C) only
- C (A), (B), (C) and (D)
- D (B), (C) and (D) only
Answer & Solution
Correct Answer
(A) (A), (B) and (D) only
Step-by-step Solution
Detailed explanation
(A) Metals obey Ohms law at constant temperature: Correct. For ohmic conductors like metals, current is directly proportional to voltage, provided the temperature remains constant. (B) The resistivity of the metals depends on temperature: Correct. As temperature increases,…
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