A thin spherical conducting shell of radius R has a charge q. Another charge Q is placed at the centre of the shell. The electrostatic potential at a point P a distance `R/2` from the centre of the shell is

A conducting shell of radius R carries charge–Q. A point charge +Q is placed at the centre of shell. The electric field E varies with distance r (from the centre of the shell) as :

A conducting shell of radius R carries charge -Q . A point charge +Q is placed at the centre. The electric field E varies with distance r (from the centre of the shell) as

A conducting shell of radius R carries charge -Q . A point charge +Q is placed at the centre. The electric field E varies with distance r (from the centre of the shell) as

A spherical conduting shell of inner radius r_1 and outer radius r_2 has a charge Q. A charge q is placed at the centre of the shell. Write the expression for the electric field at a point x > r_2 from the centre of the spherical shell.

A spherical conducting shell if inner radius R_(1) and outer radius R_(2) has a charge Q. A charge q is placed at the centre of the shell. Write an expression for the electric field at a point XgtR_(2) from the centre of the shell.

A metallic shell of inner radius a and outer radius b is carrying a charge Q. Another point charge -q is placed at the centre of the shell. Then the electrostatic potential of the shell is (k=1/(4piepsilon_0))