A solid spherical conductor of radius `R` has a spherical cavity of radius a(a

A solid spherical conductor of radius R has a spherical cavity of radius at its centre. A charge is kept at the centre of the cavity. The charge at the inner surface, outer surface are respectively.

A solid spherical conductor of radius R has a spherical cavity inside it (see figure). A point charge q is placed at the centre of the cavity. (a) What is the potential of the conductor? (b) If the charge q is shifted inside the cavity by a distance Deltax , how does the potential of the conductor change? (c) How does your answer to the question (a) and (b) change if the cavity is not spherical and the charge q is placed at any point inside it (see figure) (d) Draw electric field lines in entire space in each case. In which case all field lines are straight lines

A solid sphere of radius R has a spherical cavity of radius r as shown in the figure. If the volume charge density sigma is uniformly distributed over the whole volume of the sphere, then electric field strength at the centre of the sphere will be

A solid sphere of mass M and radius R has a spherical cavity of radius R/2 such that the centre of cavity is at a distance R/2 from the centre of the sphere. A point mass m is placed inside the cavity at a distanace R/4 from the centre of sphere. The gravitational force on mass m is

A non-conducting sphere of radius R has a spherical cavity of radius R//2 as shown. The solid part of the sphere has a uniform volume charge density rho . Find the magnitude and direction of electric field at point (a) O and (b) A.

The figure represents a solid uniform sphere of mass M and radius R . A spherical cavity of radius r is at a distance a from the centre of the sphere. The gravitational field inside the cavity is

A conducting sphere of radius R_(2) has a spherical cavity of radius R_(1) which is non concentric with the sphere. A point charge q_(1) is placed at a distance r from the centre of the cavity. For this arrangement, answer the following questions. Electric field (magnitude only) at the center of the cavity will be :

A conducting sphere of radius R_(2) has a spherical cavity of radius R_(1) which is non concentric with the sphere. A point charge q_(1) is placed at a distance r from the centre of the cavity. For this arrangement, answer the following questions. If q_(1) is shifted to the centre of the cavity, then: (choose the correct alternative)

A conducting sphere of radius R_(2) has a spherical cavity of radius R_(1) which is non concentric with the sphere. A point charge q_(1) is placed at a distance r from the centre of the cavity. For this arrangement, answer the following questions. Electric potential at the centre of the cavity will be :

A sphere of radius 2R and mas M has a spherical cavity of radius R as shown in the figure. Find the value of gravitational field at a point P at a distance of 6R from centre of the sphere.