''for any charge configuration, equipotential surface through a point is normal to the electric feild.'' justify.
Asked by Kb Aulakh | 6th Mar, 2015, 06:48: PM
Expert Answer:
We know that the work done(W) in moving a test charge along an equipotential surface is zero and this is because an equipotential surface is a surface with a constant value of potential at all points on the surface.
where, F = Electric force
s = Magnitude of displacement of the charge
For non-zero displacement this is possible only when 
, where 
Thus, the force acting on the point charge is perpendicular to the equipotential surface.
We also know that the lines of force or the electric field lines indicate the direction of electric force on a charge, therefore, for any charge configuration, euipotential surface through a point is normal to the electric field.
Answered by Faiza Lambe | 6th Mar, 2015, 07:55: PM
Concept Videos
- Two spherical conductors A and B are having charge densities σA and σB respectively. If they are joined by a thin wire then what will be the ratio of charge densities finally if the radii are rA and rB.
- in the electric field of point charge q
- Equipotential surface for two identical negative charges?
- why is the electric potential constant when electric field is zero> explain me in detail plss
- The equipotential surface for a point charge of 1nC has potential of 9V . find the radius of equipotential surface .
- What do you know about equipotential surface? Give an example.
- What is the shape of equipotential surface for a given point charge?
- How much work is done in moving a 400 μC charge between two points on an equipotential surface?
- Give main characteristics of an equipotential surface.
- Write two important conclusions regarding the relation between electric field and electric potential.
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Sign Up
Verify mobile number
Enter the OTP sent to your number
Change