Flux and nonconducting shells. A charged particle is suspended at the center of
ID: 2164151 • Letter: F
Question
Flux and nonconducting shells. A charged particle is suspended at the center of two concentric spherical shells that are very thin and made of nonconducting material. Figure 23-33a shows a cross section. Figure 23-33b gives the net flux ? through a Gaussian sphere centered on the particle, as a function of the radius r of the sphere. The scale of the vertical axis is set by ?s = 7.0 ? 105 N?m2/C. (a) What is the charge of the central particle? Give your answers in ?C. What are the net charges of (b) shell A and (c) shell B?
Explanation / Answer
a) charge of the cental particle = (7*2/5)*10^5*8.854*10^-12 = 2.48*10^-6 C = +2.48 C
b)shell A = -2.48*3 = -7.44 C
c) shell B = +2.48*5 = +12.4 C