Two charges `+20 mu C` and `- 20 muC` are 5 mm apart. Find the electric field on axial as well as on the equatorial line at a distance 20 cm from the mid -point of the dipole.

Explanation

To solve the problem of finding the electric field on the axial and equatorial lines of a dipole consisting of charges +20 µC and -20 µC separated by 5 mm, we can follow these steps:

### Step 1: Understand the Dipole Configuration
We have two charges:
- \( q_1 = +20 \, \mu C = 20 \times 10^{-6} \, C \)
- \( q_2 = -20 \, \mu C = -20 \times 10^{-6} \, C \)
The distance between the charges is given as \( 2a = 5 \, mm = 5 \times 10^{-3} \, m \). Therefore, the separation \( a \) is:
\[
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