A point charge is placed at a distance 2 a from the centre of a thin conducting uncharged spherical shell A of radius 'a' as shown in the figure.Then the charge on the shell will be

A point charge q is placed at a distance of r from the centre O of an uncharged spherical shell of inner radius R and outer radius 2R. The electric potential at the centre of the shell will be

A point charge q is placed at a distance d from centre of a uniformly charged conducting spherical shell of radius R and having charge Q as shown. Magnitude of electric field intensity at point P just inside the shell due to charge on shell is

A point charge q'q is placed at distance 'a' from the centre of an uncharged thin spherical conducting shell of radius R=2a. A point 'P' is located at a distance 4a from the centre of the conducting shell as shown. The electric potential due to induced charge on the inner surface of the conducting shell at point 'P' is

A point charge +q is placed at the centre of a conducting spherical shell of inner radius a and outer radius b. Find the charge appearing on the inner and outer surface of the shell.

A solid conducting sphere of radius 'a' is surrounded by a thin uncharged concentric conducting shell of radius 2a . A point charge q is placed at a distance 4a from common centre of conducting sphere and shell. The inner sphere is then grounded The charge on solid sphere is

A point charge Q is placed at the centre of an uncharged spherical shell of inner radius a and outer radius b. There is a small tunnel in the body of the shell. Calculate the work done to transfer the charge through the tunnel to infinity. [Hint: Remove the charge bit by bit and calculate the total work done.]

A solid conducting sphere of radius 'a' is surrounded by a thin uncharged concentric conducting shell of radius 2a . A point charge q is placed at a distance 4a from common centre of conducting sphere and shell. The inner sphere is then grounded The potential of outer shell is