A metal shell of radius 5cm was initially uncharged and at its centre a charge of 80 mu C is placed.If the metal shell is grounded find the charge that flows into the earth.

A metallic spherical shell of radius R has a charge -Q on it. A point charge +Q is placed at the centre of the shell. Which of the graphs shown below may correctly represent the variation of electric field E with distance r from the centre of shell ?

Consider two concentric spherical metal shells of radii 'a' and bgt a .The outer shell has charge Q but the inner shell has no charge.Now the inner shell is grounded ,This means that the inner shell will come at zero potential and that electric fields lines leave the outer shell and end on the inner shell.(a) Find the charge on the inner shell Find the potential on outer sphere.

Figure - shows two conducting thin concentric shells of radii r and 3r The outer shell carries charge q where as inner shell is uncharged. Find the charge that will flow from inner shell to earth after the switch S is closed. [+q/3 charge will flow inner shell to earth]

let there be a non conducting infinite large sheet of charge of surface charge density (1)/(36pi)nC//m^(2) An uncharged conducting spherical shell of radius 20 cm is placed in from of sheet. A point charge 6 m C is placed at centre of the shell. force on point charge due to shell is x mN. Find velue of x.

A hollow metal sphere of radius 5 cms is charged such that the potential on its surface is 10 volts. The potential at the centre of the sphere is