A point P lies at a distance x from the midpoint of an electric dip...

Question

A point P lies at a distance x from the midpoint of an electric dipole on its axis. The electric potential at Point P is proportional to

Accepted Answer

✅ Correct Answer: (B) 1/x²

📌 Concept: Electric Potential due to a Dipole on Axial Line

For a point on the <b>axial line</b> of an electric dipole at distance x from its centre:

V = kp / x²

Where:

k = Coulomb's constant = 9 × 10⁹ N·m²/C²
- p = Electric dipole moment
- x = Distance from centre of dipole

∴ V ∝ 1/x²