Figure shows a solid hemisphere with a charge of 5 nC distributed uniformly through its volume. The hemisphere lies on a plane and point P is located on the plane, along a radial line from the centre of curvature at distance 15 cm. The electric potential at point P due to the hemisphere is:

Figure showns four solid spheres, each with charge Q uniformly distributed through its volume. The figure also shows a point P for each sphere. All at the same distance from the centre of the sphere. Rank the spheres according to the magnitude of the electric field they produce at point P.

A solid conducting sphere ofradius 5.0 cm has a charge of 0.25nC distributed uniformly on its surface. If point A is located at the centre of the sphere and a point Bis 15cm from the center, what is the magnitude of the electric potential difference between these two points ?

figure shows, in cross section, two solid spheres with uniformaly distributed charge throughout their volumes. Each has radius R. point P lies on a line connecting the centres of the spheres, at radial distance r/2.00 from the centre of sphere 1 . If the net electric field at point P is zero what is the ratio q_(2)//q_(1) of the total charges ?

Figure shows, in cross section , two solid spheres with uniformly distributed charge throughout their volumes. Each has radius R. Point P lies on a line connecting the centers of the spheres, at radial distance R//2 from the center of sphere 1. If the net electric field at point P is zero, and Q_1 is 64muC and Q_2 = 8xmuC , what is the value of x.

Electric charge Q is uniformly distributed around a thin ring of radius a. find the potential a point P on the axis of the ring at a distance x from the centre of the ring .