CUET · PHYSICS · PYQ PAPER 2025
Which of the following statements are true for a conductor in an external electric field?
(A) Inside a conductor, the electric field is non-zero.
(B) At the surface of a charged conductor, the electric field must be normal to the surface at every point.
(C) The interior of a conductor can have no excess charge in a static situation.
(D) Electrostatic potential is constant throughout the volume of the conductor and has the same value on its surface.
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
(D) (B), (C) and (D) only
Step-by-step Solution
Detailed explanation
(B) is True: If the electric field were not normal (perpendicular) to the surface, a tangential component would exist, causing charges to move along the surface, which contradicts the state of static equilibrium. (C) is True: According to Gauss’s Law, since the electric field…
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