# What is the electric field due to a dipole at equatorial point?

Table of Contents

- 1 What is the electric field due to a dipole at equatorial point?
- 2 Why is electric dipole negative?
- 3 How is electric field of a dipole on equatorial line different from electric field due to a point charge?
- 4 What is electric field due to a dipole?
- 5 When the electric potential due to a dipole is zero?
- 6 How we can explain potential at any point on the equatorial line of dipole is zero find the minimum and maximum value of magnitude of the potential of a dipole?
- 7 How does an electric field of short electric dipole vary with distance on the equatorial line?
- 8 Can electric dipole be negative?

## What is the electric field due to a dipole at equatorial point?

The direction of electric field at equatorial point A or B will be in opposite direction to that of direction of dipole moment. Two opposite charges each of magnitude 2μC are 1cm apart.

## Why is electric dipole negative?

By definition, positive electric charge gets pushed in the direction of the electric field line and negative electric charge gets pushed in the direction opposite of the electric field line.

**Why is the electric potential at a point on the equatorial line of an electric dipole is zero?**

Actually the potential due to one charge of the dipole is just equal and opposite to that of due to other charge on any point on the equatorial line,therefore the potential of a dipole vanishes on any point on the equatorial line. the above is due to symmetry of the charges of dipole and their opposite character.

### How is electric field of a dipole on equatorial line different from electric field due to a point charge?

The direction of the electric field at points on the dipole axis is directed along the direction of dipole moment vector but at points on the equatorial plane it is directed opposite to the dipole moment vector, that is along – . Note that for a point charge, the electric field varies as 1/r2 .

### What is electric field due to a dipole?

The electric field strength due to a dipole, far away, is always proportional to the dipole moment and inversely proportional to the cube of the distance. Dipole moment is the product of the charge and distance between the two charges. Let’s derive the expression for this field on the equator of the dipole.

**Why is electric dipole negative to positive?**

showing that the dipole moment vector is directed from the negative charge to the positive charge because the position vector of a point is directed outward from the origin to that point.

#### When the electric potential due to a dipole is zero?

What is the electric potential due to an electric dipole at an equatorial point? Zero, as potential on equatorial point, due to charges of electric dipole, are equal in magnitude but opposite in nature and hence their resultant is zero.

#### How we can explain potential at any point on the equatorial line of dipole is zero find the minimum and maximum value of magnitude of the potential of a dipole?

The potential at a point due to an electric dipole will be maximum and minimum when the angles between the axis of the dipole and the line joining the point to the dipole are respectively. V=pcosθr2. If θ=0∘ then Va=max. If θ=180∘ then Ve=min.

**What is the electric field due to an electric dipole?**

The electric field at A due to an electric dipole, is perpendicular to the dipole moment vector →P, the angle θ is: By default, the direction of electric dipoles in space is always from negative charge $ – q$to positive charge $q$. The midpoint $q$ and $ – q$is called the center of the dipole.

## How does an electric field of short electric dipole vary with distance on the equatorial line?

For an electric dipole (at large distances), The electric potential varies inversely with the square of the distance. For a point charge, The electric potential varies inversely with the distance.

## Can electric dipole be negative?

The electric dipole moment, a vector, is directed along the line from negative charge toward positive charge. Dipole moments tend to point along the direction of the surrounding electric field.