The outer curved surface of a cone of slant length `l` is shown is figure is charged uniformly with the charge `Q` .Find the potential at the vertex of the cone.

A rod length l is uniformly charged with charge q. Calculate potential at point P.

Find the curved surface area of a cone,if its slant height is 60cm and the radius of its base is 21cm.

A charge q is placed at a height (h)/(4) from the base of a cone of height h and radius R as shown in figure. Calculate the flux linked with the curved surface of the cone.

A right circular imaginary cone is shown in figure A, B, and C are the points in the plane containing the base of the cone, while D is the point at the vertex of the cone. If phi_A, phi_B, phi_C and phi_D represent the fulx through the curved surface of the cone when a point charge Q is at points A, B, C, and D. respectively. then.

If the curved surface area of a cone is thrice that of another cone and slant height of the second cone is thrice that of the first, find the ratio of the area of their base.

As shown in the figure, charges and are placed at the vertices and of an isosceles triangle. The potential at the vertex A is

Three charges are placed at the vertex of an equilateral triangle as shown in figure. The value of Q, for which the electrostatic potential energy of the system is zero, is

The lateral surface of a cylinder is equal to the curved surface of a come. If the radius be the same, find the ratio of the height of the cylinder and slant height of the cone.

The ratio of curved surface area of two cones is 1:4 and the ratio of slant height of the two cones is 2 : 1. What is the ratio of the radius of the two cones ?

The ratio of curved surface area of two cones is 1:9 and the ratio of slant height of the two cones is 3 :1. What is the ratio of the radius of the two cones ?