Question
Which of the following statements are correct?
A. Inside a 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:
Options
Solution
Sol. [Key Concept: Identifying the correct statements]
A. Electrostatic field is zero inside a conductor.
B. Electric field at the surface of a charged conductor $= \frac{\sigma}{\varepsilon_{0}}\widehat{n}$, depends on surface charge density $(\sigma)$.
C. The interior of a charged conductor cannot have any excess charge in the static situation.
D. At the surface of a charged conductor, the electrostatic field ⟂ surface.
E. The electrostatic potential is constant and can be non-zero everywhere inside a charged conductor.
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