Question

For distance far away from centre of dipole the change in magnitude of electric field with change in distance from the centre of dipole is

Answer 1

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Explanation:

Answer 2

Answer: More in the case of the axis of the dipole as compared to that of the equatorial plane of the dipole.

Explanation:

At axis E = 1/4πΕ₀×2p/r³

At the equator, E = 1/4πΕ₀× -p/r³

On differentiating the above equations we get,

E at axis = -6 ×1/4πΕ₀×p/r⁴

E at equator = -3 ×1/4πΕ₀×p/r⁴

From the above equations, we can infer that E at the axis is more than E at the equator.