The amount of work done in moving a charge from one point to another a...
Equipotential Lines and Surfaces
Equipotential lines and surfaces are the lines and surfaces along which the potential is constant. This means that the work done in moving a charge from one point to another along an equipotential line or surface is zero.
Explanation
When a charge is moved along an equipotential line or surface, there is no change in potential energy. This is because the potential is constant along the line or surface. Therefore, the work done in moving the charge is zero.
This can be understood using the formula for work done:
W = F × d × cos θ
where W is the work done, F is the force, d is the displacement, and θ is the angle between the force and the displacement.
When a charge is moved along an equipotential line or surface, the force acting on the charge is perpendicular to the displacement. This is because the electric field is always perpendicular to the equipotential lines or surfaces. Therefore, the angle between the force and the displacement is 90 degrees, and cos θ = 0.
Thus, the work done is zero, and the correct option is A.
The amount of work done in moving a charge from one point to another a...
Since Potential difference between two points in equipotential surfaces is zero , the work done between two points in equipotential surface is also zero .