Inside a ball charged uniformly with volume density `rho` there is a spherical cavity. The centre of the ball by a distance `a`. Find the field strength `E` inside the cavity, assuming the permittively equal to unity.

Inside an infinitely long circular cylinder charged uniformly with volume density P ther is a circular cylindrical cavity. The distance between the axis of the cylinder and the cavity is equal to a. Find the electric field strenght E inside the cavity. The permittivity us assumed to be equal to unity.

Inside a uniform sphere of density rho there is a spherical cavity whose centre is at a distance l from the centre of the sphere. Find the strength of the gravitational field inside the cavity.

Inside a uniform sphere of density rho there is a spherical cavity whose centre is at a distance l from the centre of the sphere. Find the strength G of the gravitational field inside the cavity.

Positive charge is uniformly distrubuted with volume charge density rho of sphere of radius R. A spherical cavity is created in the sphere as shown in figure. This electric field intensity inside the cavity at point P is(where CP =R/5 , C_0 C = 2R/3 , radius of cavity is R/4, C_0 & C are centre of sphere & cavity respectively)

Inside a indinitely long circular cylinder cavity. The distance between the axes of the cylinder and the cavity is equal to a . Find the electric field strength E inside the cavity. The permittivity is assumed to eb equal to unity.

A metallic ball has spherical cavity at its centre. If the ball is heated, what happens to the cavity

A sphere of radius R has a uniform volume density rho . A spherical cavity of radius b, whose center lies at veca , is removed from the sphere. i. Find the electric field at any point inside the spherical cavity. ii. Find the electric field outside the cavity (a) at points inside the large sphere but outside the cavity and (b) at points outside the large sphere.