A long, hollow conducting cylinder is kept coaxially inside another long, hollow conducting cylinder of larger radius. Both the cylinders are initially electrically neutral.

  • [IIT 2007]
  • A

    A potential difference appears between the two cylinders when a charge density is given to the inner cylinder.

  • B

    A potential difference appears between the two cylinders when a charge density is given to the outer cylinder.

  • C

    No potential difference appears between the two cylinders when a uniform line charge is kept along the axis of the cylinders.

  • D

    No potential difference appears between the two cylinders when same charge density is given to both the cylinders.

Similar Questions

Figure shows three circular arcs, each of radius $R$ and total charge as indicated. The net electric potential at the centre of curvature is

A charge of total amount $Q$ is distributed over two concentric hollow spheres of radii $r$ and $R ( R > r)$ such that the surface charge densities on the two spheres are equal. The electric potential at the common centre is

  • [IIT 1981]

Ten charges are placed on the circumference of a circle of radius $R$ with constant angular separation between successive charges. Alternate charges $1,3,5,7,9$ have charge $(+q)$ each, while $2,4,6,8,10$ have charge $(-q)$ each. The potential $V$ and the electric field $E$ at the centre of the circle are respectively

(Take $V =0$ at infinity $)$

  • [JEE MAIN 2020]

Write an equation for potential due to linear charge distribution. 

There is a uniformly charged non conducting solid sphere made of material of dielectric constant one. If electric potential at infinity be zero, then the potential at its surface is $V$. If we take electric potential at its surface to be zero, then the potential at the centre will be