Question

Draw an equipotential surface for a system of two similar and opposite charges

Answer 1

Buddy take it this is your diagram frm diagram

Answer 2

Answer:

The equipotential surfaces of two equal and opposite charges separated by a small distance are shown in the figure.      

Explanation:

The equipotential surfaces are the surfaces in an electric field where the magnitude of electric potential is same at all the points.

$\phi(r)=constant$

• Electric field intensity is the negative gradient of the scalar potential, $\vec E=-\nabla \phi$,

       therefore,

       $E=-\dfrac{d\phi}{dr} =0$ .

• Shows that there is no electric field component along the direction of equipotential surface.
• Thus, the electric field is perpendicular to the plane of an equipotential surface.
• The potential point function is a singled valued function, hence the equipotential surfaces never intersect with each other.
• For a point charge, the equipotential surfaces are spherical with charge at its centre.                
• For two equal and opposite charges separated by a small distance​, the equipotential surfaces in the presence of field lines are as shown in the figure.