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Permeability

A point dipol...

Question

A point dipole is placed near to a metallic conductor. Find an electric field due to induced charge at point A.

\frac{K p}{r^{3}}, left

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\frac{2 K p}{r^{3}}, right

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\frac{2 K p}{r^{3}}, left

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\frac{K p}{r^{3}}, right

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Solution

The correct option is B $\frac{2 K p}{r^{3}}, right$

Total electric field is given by
${\to E}_{net} = {\to E}_{ind} +_{dipole}$

Total electric field inside a conductor is zero
$0 = E_{ind} + \frac{2 K p}{r^{3}} (left)$
$E_{ind} = \frac{- 2 K p}{r^{3}}, (right)$

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