What is the work done in moving a test charge q through a distance of 1 cm along the equatorial axis of an electric dipole ?

Explanation

To solve the question of the work done in moving a test charge \( q \) through a distance of 1 cm along the equatorial axis of an electric dipole, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Electric Dipole**:
An electric dipole consists of two equal and opposite charges, +q and -q, separated by a distance \( 2d \). The equatorial axis is the line that is perpendicular to the dipole axis and passes through the midpoint of the dipole.

2. **Electric Potential on the Equatorial Axis**:
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