A small charged metal sphere is situated in an earthed metal box. Illustrates the electric field between the sphere and the metal box. The radius r of the sphere is 2.4 cm. The magnitude of the charge q on the sphere is 0.76 n C.

Two small charged metal sphere A and B are situated in a vaccum. The distance between the centres of the spheres is 12.0 cm, as shown in the fig. The charge on each sphere may be assumed to be a point charge at the centre of the sphere. Point P is a movable point that lies on the line joining the centres of the sphere and is distance x fromt he centre of sphere A. The variation with distance x fo the electric field strength E at point P as shown in the figure. State the evidence provided by in the fig for the statement that the spheres are conductors, the charges on the spheres are either both positive or both negative.

Two small charged metal sphere A and B are situated in a vaccum. The distance between the centres of the spheres is 12.0 cm, as shown in the fig. The charge on each sphere may be assumed to be a point charge at the centre of the sphere. Point P is a movable point that lies on the line joining the centres of the sphere and is distance x fromt he centre of sphere A. The variation with distance x fo the electric field strength E at point P as shown in the figure. Use fig to state and explain the distance x at which the rate of change of potential with distance is maximum and minimum.

If one penetrates a uniformly charged solid sphere, the electric field strength E

Find electric field due to solid sphere of charge at a point inside.

A cone is 8.4 cm high and the radius of its base is 2.1 cm. It is melted and recast into a sphere. The radius of the sphere is

Find electric field due to solid sphere of charge at a point on the surface.

A sphere of charge of radius R has uniform volume charge density. The electric field due to the sphere of charge at a point

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 form its centre

Find electric field due to solid sphere of charge q at a point outside.

A conducting sphere of radius 10 cm has an unknown charge. If the electric field 20 cm from the centre of the sphere is 1.5xx 10^3N//C and points radially inward, what is the net charge on the sphere?