(II) A long cylindrical shell of radius R 0 and length ℓ ( R 0 ≪ l ) possesses a uniform surface charge density (charge per unit area) σ (Fig. 22–33). Determine the electric field at points ( a ) outside the cylinder ( R > R 0 ) and ( b ) inside the cylinder (0 < R < R 0 ); assume the points are far from the ends und not too far from the shell ( R ≪ l ) . ( c ) Compare to the result for a long line of charge, Example 22–6. Neglect the thickness of shell. FIGURE 22-33 Problem 33.
(II) A long cylindrical shell of radius R 0 and length ℓ ( R 0 ≪ l ) possesses a uniform surface charge density (charge per unit area) σ (Fig. 22–33). Determine the electric field at points ( a ) outside the cylinder ( R > R 0 ) and ( b ) inside the cylinder (0 < R < R 0 ); assume the points are far from the ends und not too far from the shell ( R ≪ l ) . ( c ) Compare to the result for a long line of charge, Example 22–6. Neglect the thickness of shell. FIGURE 22-33 Problem 33.
(II) A long cylindrical shell of radius R0 and length ℓ
(
R
0
≪
l
)
possesses a uniform surface charge density (charge per unit area) σ (Fig. 22–33). Determine the electric field at points (a) outside the cylinder (R > R0) and (b) inside the cylinder (0 < R < R0); assume the points are far from the ends und not too far from the shell
(
R
≪
l
)
. (c) Compare to the result for a long line of charge, Example 22–6. Neglect the thickness of shell.
2)
In Fig. 23-45, a small circular hole of radius R = 1.80 cm has
een cut in the middle of an infinite, flat, nonconducting surface
hat has uniform charge density o=4.50 pC/m². A z axis, with its
rigin at the hole's center, is perpendicular to the surface. In unit-
ector notation, what is the electric field at point P at z = 2.56 cm?
Hint: See Eq. 22-26 and use
superposition.)
X
X
X
X X X
X
X
X
X X
X
X
X X
X X
XX
X X X X
15 X
XXX
Z
Figure 23-45
X
X
X
X X
X X X X X X X
X X X
X X X X
X X X
X
X X
X X
X
(b): A conducting sphere of radius 1.0cm carries a charge which is uniformly distributed on its
surface. The surface charged density is 0.5C/cm², Calculate the electric field at the surface of
sphere.
wid
6 In Fig. 22-27, two identical circu-
lar nonconducting rings are centered
on the same line with their planes
perpendicular to the line. Each ring
has charge that is uniformly distrib-
uted along its circumference. The
rings each produce electric fields at points along the line. For three
situations, the charges on rings A and B are, respectively, (1) qo and
9o, (2) -90 and -90, and (3) - and qo. Rank the situations
according to the magnitude of the net electric field at (a) point P1
midway between the rings, (b) point P, at the center of ring B, and
(c) point P3 to the right of ring B. greatest first.
P,
P3
Ring A
Ring B
Figure 22-27 Question 6.
Chapter 22 Solutions
Physics for Scientists and Engineers with Modern Physics
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