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Chapter 23: Q25P (page 680)
An infinite line of charge produces a field of magnitudeat distance 2.0 m. Find the linear charge density.
The linear charge density is .
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Figure 23-40 shows a section of a long, thin-walled metal tube of radius, with a charge per unit length of .
What is the magnitude Eof the electric field at radial distance
(a) and
(b) ?
(c) Graph Eversus rfor the range.
In Fig. 23-49, a small, non-conducting ball of massand charge (distributed uniformly through its volume) hangs from an insulating thread that makes an angle with a vertical, uniformly charged non-conducting sheet (shown in cross-section). Considering the gravitational force on the ball and assuming the sheet extends far vertically and into and out of the page, calculate the surface charge density s of the sheet.
A thin-walled metal spherical shell of radius a has a charge. Concentric with it is a thin-walled metal spherical shell of radius and charge . Find the electric field at points a distance r from the common center, where
(a)
(b) and
(c)
(d) Discuss the criterion you would use to determine how the charges are distributed on the inner and outer surfaces of the shells.
Charge of uniform volume densityfills an infinite slab between role="math" localid="1657340713406" and role="math" localid="1657340708898" What is the magnitude of the electric field at any point with the coordinate (a) and (b)?
The electric field just above the surface of the charged conducting drum of a photocopying machine has a magnitude Eof . What is the surface charge density on the drum?
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