Which of the following statements are correct ?
A. Inside the conductor, the electrostatic field is zero.
B. Electric field at the surface of a charged conductor does not depend on its surface charge density.
C. The interior of a charged conductor can have no excess charge in the static situation.
D. At the surface of a charged conductor, the electrostatic field must be normal to the surface at every point.
E. The electrostatic potential is zero everywhere inside a charged conductor.
Choose the correct answer from the options given below :
- A
A, C and D only
- B
A, C and E only
- C
C, D and E only
- D
A, B and D only
A. True — electrostatic field inside a conductor is zero.
B. False — field at the surface is and clearly depends on the surface charge density.
C. True — in the static case, any excess charge resides on the surface; interior charge is zero.
D. True — if there were a tangential component, charges would move; so must be perpendicular to the surface.
E. False — inside a conductor, implies is constant (not necessarily zero).
Correct set: A, C and D.
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