If the force exerted by an electric dipole on a charge q at a distance of 1 m is F , the force at a point 2 m away in the same direction will be

Question

If the force exerted by an electric dipole on a charge q at a distance of 1 m is F , the force at a point 2 m away in the same direction will be, F 2, F 4, F 6, F 8

MARKS App · Accepted Answer

Force exerted by an electric dipole on a charge is inversely proportional to the cube of distance of the charge from the centre of the dipole F ∝ 1 r 3 ∴ F F ′ = r ′ r 3 F F ′ = 2 1 3 F ′ = F 8

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