A sphere of radius r 0 carries a volume charge density ρ E (Fig. 22–46). A spherical cavity of radius r 0 /2 is then scooped out and left empty, as shown. ( a ) What is the magnitude and direction of the electric field at point A? ( b ) What is the direction and magnitude of the electric field at point B? Points A and C are at the centers of the respective spheres. FIGURE 22–46 Problem 61.
A sphere of radius r 0 carries a volume charge density ρ E (Fig. 22–46). A spherical cavity of radius r 0 /2 is then scooped out and left empty, as shown. ( a ) What is the magnitude and direction of the electric field at point A? ( b ) What is the direction and magnitude of the electric field at point B? Points A and C are at the centers of the respective spheres. FIGURE 22–46 Problem 61.
A sphere of radius r0 carries a volume charge density ρE (Fig. 22–46). A spherical cavity of radius r0/2 is then scooped out and left empty, as shown. (a) What is the magnitude and direction of the electric field at point A? (b) What is the direction and magnitude of the electric field at point B? Points A and C are at the centers of the respective spheres.
In Fig.89 the metallic wire has a uniform linear charge density λ = 4 x 10-⁹C/m, the rounding
radius R=10cm is much smaller than the length of the wire. Find the magnitude of the electric
field at point "0".
001|2
R
Fig-89
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.
65 In Fig. 22-64a, a particle of charge +Q produces an electric field
of magnitude Epart at point P, at distance R from the particle. In
Fig. 22-64b, that same amount of charge is spread uniformly along
a circular arc that has radius
R and subtends an angle 0.
The charge on the arc pro-
+Q/e/2
duces an electric field
e/2
of magnitude Eare at its cen-
ter of curvature P. For what
value of e does Eare
0.500Epart? (Hint: You will
probably resort to a graphi-
cal solution.)
(a)
(6)
Figure 22-64 Problem 65.
Chapter 22 Solutions
Physics for Scientists and Engineers with Modern Physics
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
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