Consider a neutral conducting sphere. A positive point charge is placed outside the sphere. The net charge on the sphere is then:negative and distributed uniformly over its surface.negative and appears only at the point on the sphere closest to the point chargenegative and distributed non-uniformly over its entire surface of the spherezero

If charges are given to a conducting sphere, then charges goes to :Inner surfaceOuter surface Both None

When is the net charge positive, and when is it negative?

A non-conducting solid sphere of radius R is uniformly charged. The magnitude of the electric field due to the sphere at a distance r from its centre :-Decreases as r increases, for r < RDecrease as r increase, for 0 < r < ∞Decrease as r increase, for R < r < ∞It discontinuous at r = R

A positively charged sphere A is brought close without touching a neutral sphere B. Sphere B is touched with a grounded wire. What is the charge on sphere B after the wire is removed?*1 pointpositivenegativeneutralIt depends on the contact time.

Suppose an uncharged solid steel ball, for example, one of the steel balls used in an old-fashioned pinball machine, is resting on a perfect insulator. Some small amount of negative charge (say, a few hundred electrons) is placed at the north pole of the ball. If you could check the distribution of the charge after a few seconds, what would you detect? multiple choiceAll of the added charge is distributed uniformly over the surface of the ball.All of the added charge has vanished, and the ball is again electrically neutral.All of the added charge has moved to the center of the ball.The added charge is still located at or very near the north pole of the ball.The added charge is performing a simple harmonic oscillation on a straight line between the south and north poles of the ball.