Home
Class 12
PHYSICS
An isolated point charge is given a char...

An isolated point charge is given a charge q.
The potential at a distance r is :

A

`(q^2)/(4pi varepsilon_0r)`

B

`q/(4pivarepsilon_0r)`

C

`q/(8pivarepsilon_0r)`

D

`(q^2)/(8pivarepsilon_0r)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

An siolated metal sphere of radius 'r' is given a charge 'q' . The potential energy of the sphere is

The electric field due to a point charge depends on the distance r as parallely indicate how each of the following quantities depends on r ? (a) Intensity of light from a point source. (b). Electric potential due to a point charge. (c) Electrical potential at a distance r from to centre metallic sphere given r lt radius of the sphere.

A conducting sphere of radius R is given a charge Q.The electric potential and the electric field at the centre of the sphere respectively are

A conducting sphere of radius R is give a charge Q. The electric potential and the electric field at the centre of the sphere are, respectively

A charge Q is distributed over two concentric hollow spheres of radii r and R (R gt r), so that the surface charge densities are equal. The potential at the common centre is (1)/(4pi epsi_(0))" times"

The point charges having equal charges separated by 1 distance experiences a force of 8N. What will be the force experienced by them, if they are held in water at the same distance ?

Two fixed point charges + 4q and + q are separated by a distance d. Where should the third point charge be placed for it to be in equilibrium?

Figures (a) and (b) show the field lines of a positive and negative point charge respectively. (a). Gives the sign of the potential difference V_(P)-V_(Q) : V_(B)-V_(A) (b) Given the sign of the potential energy difference of a small negative charge between the points Q and P, A and b (c) Give the sign of the work done by the field in moving a small positive charge from Q to P. (d) Give the sign of the work done by external agencyin moving a small negative charge from B to A. (e) Does the kinetic energy of a small negative charge increase or decrease in going from B to A?

A conducting spherical shell of radius R has a charge Q. A small sphere of radius r_(0) (r_(0) lt R) currying a charge g is introduced inside the large shell. What is the potential i. at a point r (r gt r_(0)) due to inner sphere ii. it at a point r=R iii. at a point r=r_(0)

The inner and outer radii of a spherical capacitor are r_1 and r_2 respectively. When the inner surface is earthed . The outer sphere is given a charge +Q , then the charge on the inner surface is