Figure shows a cross-section ofa spherical metal shell of inner radius R and out radius ZR. A point charge q is ·located at a distanceR/2 from the centre of the shell. If the shell is electrically neutral, then which of the following statements is/are correct :

Explanation

With a particle of charge `-5.0 muC` within the shell, a charge of `+5.0 muC` must lie on the inner wall of the shell in order that the net enclosed charge be zero.
If the particle were centered, this positive charge would be uniformly distributed along the inner wall. However, since the particle is off-center, the distribution of positive charge is skewed, as suggested by Fig. 23-25b, because the positive charge tends to collect on the section of the inner wall nearest the (negative) particle.
Because the shell is electrically neutral, its inner wall can have a charge of +`5.0 muC` only if electrons, with a total charge of `-5.0muC` uC, leave the inner wall and move to the outer wall. There they spread out uniformly, as is also suggested by Fig. 23-18b.
This distribution of negative charge is uniform because the shell is spherical and because the skewed distribution of positive charge on the inner wall cannot produce an electric field in the shell to affect the distribution of charge on the outer wall. Furthermore, these negative charges repel one another.
The field lines inside and outside the shell are shown approximately in Fig. 23-25b. All the field lines intersect the shell and the particle perpendicularly. Inside the shell the pattern of field lines is skewed because of the skew of the positive charge distribution. Outside the shell the pattern is the same as if the particle were centered and the shell were missing. In fact, this would be true no matter where inside the shell the particle happened to be located