Question

sketch equipotential surfaces for a. a positive point charge.b. two equal and opposite charges seperated by a small distance​

Answer 1

Explanation:

sketch equipotential surfaces for a. a positive point charge.b. two equal and opposite charges seperated by a small distance

Answer 2

Answer:

Equipotential surfaces for a positive point charge and two equal and opposite charges separated by a small distance​

Explanation:

The equipotential surface is a surface in an electric field where the value of electric potential is same at all the points.

$\phi(r)=constant$

• As electric field is the negative gradient of the scalar potential, $E=-\nabla \phi$,
• therefore, $Edr=-d\phi =0$.
• Means to say no electric field component along the direction of equipotential surface.
• Thus, the electric field is perpendicular to the plane in an equipotential surface.
• The potential point function is a singled valued function, hence the equipotential surfaces never intersect with each other.

a. For an isolated point charge, the equipotential surfaces are spherical with charge at its centre, as shown in the figure.                

b. Two equal and opposite charges separated by a small distance​ is   nothing but an electric dipole. Equipotential surfaces for an electric dipole are as shown in the figure.