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Superposition of Electric Fields

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Question

Give the contrasting features of electric potential of a dipole from that due to a single charge.

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Solution

Dear Student

At large distance the electric field falls off, not as 1/r ² (typical of field due to a single charge) but as 1/r ³ .
Also
At large distances, dipole potential falls off as 1/r², whereas the potential due to a single charge falls off as 1/r.

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