Question

Which of the following charge distributions can be accurately replaced by a single charge of magnitude Q at the origin (0,y 0, z 0) for the purposes of calculating the electric field at the location (x 0m, y 0m,z2m). and with a uniformly distributed charge of a) a small solid sphere of radius r 0.5m and with a uniformly distributed charge of GQ b) a large solid sphere of radius r4m and with a uniformly distributed charge of Q c) a small spherical shell of inner radius 0.3m, outer radius r20.5m, and a uniformly distributed charge of Q d) a medium-sized spherical shell of inner radius r11.5m, outer radius r2 -2.5m, and a uniformly distributed charge of Q e) a large spherical shell of radius 1-3.0m, outer radius r2 5.0m, and a uniformly distributed charge ofQ f) two thin spherical shells, the first shell having a radius of ri = 0 7m and a uniformly distributed charge of Q. the second she having a radius of r 1.3m and a uniformly distributed charge of Q2, where-Q1 Q2 9) 8 equal positive charges, each of magnitude arranged in a cube centered on the origin. Select the correct answer only (a) and (c):the small sphere and the small shell Answer O only (a), (c), and (f): the small sphere, the small shell, and the two thin shells. O only (a) and (b): both of the solid spheres O only (a) - (f): all of the uniformly distributed spheres and shells O only (c)-(f): all of the spherical shells.

Answer 1

(for R > 0.5 m, it will behave as point charge (r > .2 m) (as long as the outer radius is smaller than 2 m) (r > 2m) (r > 2^m) (r < 2m and theta_1 + theta_2 = theta) 9this doesn�t resemble point charge properly b rightarrow a, c, f

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