   Chapter 15, Problem 3CQ

Chapter
Section
Textbook Problem

Each of the following statements is related to conductors in electrostatic equilibrium. Choose the words that make each statement correct. (i) The net charge is always zero [(a) inside; (b) on] the surface of an isolated conductor. (ii) The electric field is always zero [(c) inside; (d) just outside] a perfect conductor. (iii) The charge density on the surface of an isolated, charged conductor is highest where the surface is [(e) sharpest; (f) smoothest].

(i)

To determine
The net charge of a conductor.

Explanation

Electric field inside the isolated conductor is always zero. From Gauss’s law,

SE.dS=qinsideε0 (I)

• E is the electric field.
• S is any closed surface.
• qinside is the charge inside the Gaussian surface

(ii)

To determine
The electric field of a conductor.

(iii)

To determine
The charge density on the surface of a conductor.

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