   Chapter 15, Problem 40P

Chapter
Section
Textbook Problem

The dome of a Van de Graaff generator receives a charge of 2.0 × 10−4 C. Find the strength of the electric field (a) inside the dome, (b) at the surface of the dome, assuming it has a radius of 1.0 m, and (c) 4.0 in front the center of the dome. Hint: See Section 15.5 to review properties of conductors in electrostatic equilibrium. Also, note that the points on the surface are outside a spherically symmetric charge distribution; the total charge may be considered to be located at the center of the sphere.

(a)

To determine
The electric field inside the dome.

Explanation

The dome is a conductor. Electric field inside a conductor is zero...

(b)

To determine
The electric field at the surface of dome.

(c)

To determine
The electric field at 4.0 m from the dome.

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