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Equipotential surfaces have equal potentials everywhere on them. For stronger fields, equipotential surfaces are closer to each other! These equipotential surfaces are always perpendicular to the electric field direction, at every point.

## How do you find the direction of an electric field on an equipotential line?

Equipotential lines are perpendicular to electric field lines in every case. W = −ΔPE = −qΔV = 0. W = Fd cos θ = qEd cos θ = 0. Note that in the above equation, E and F symbolize the magnitudes of the electric field strength and force, respectively.

## What is the direction of electric field with respect to equipotential surface for any charge distribution?

The electric field is always perpendicular to an equipotential surface. Two equipotential surfaces can never intersect. For a point charge, the equipotential surfaces are concentric spherical shells.

## What direction does the electric field have at point A?

Electric field near an isolated point charge

The electric field direction points straight away from a positive point charge, and straight at a negative point charge.

## What is true about the direction of the electric field just outside the surface of a conductor?

Just outside a conductor, the electric field lines are perpendicular to its surface, ending or beginning on charges on the surface. Any excess charge resides entirely on the surface or surfaces of a conductor.

## Why are electric field lines perpendicular at a point on an equipotential?

An equipotential surface is circular in the two-dimensional. Since the electric field lines are directed radially away from the charge, hence they are opposite to the equipotential lines. Therefore, the electric field is perpendicular to the equipotential surface.