Starting from Eq. 24-54 derive the expression for the electric field due to a dipole at a point on the dipole axis.

Explanation

To derive the expression for the electric field due to a dipole at a point on the dipole axis, we will follow these steps:

### Step 1: Define the Dipole
Consider an electric dipole consisting of two charges, +Q and -Q, separated by a distance of 2a. The dipole moment \( \vec{p} \) is defined as:
\[ \vec{p} = Q \cdot 2a \]

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