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Question

Choose the correct relation regarding potential of an electric dipole. Here A, B, C and D all are at equal distance from point O which is much larger than the dimensions of the dipole. Then

A

= =

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B

= =

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C

=

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D

=

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Solution

The correct option is A
= =

A and B are axial points

$| V_{A} |$ = $| V_{B} |$ = $\frac{K p}{r^{2}}$ $c o s$ $0^{\circ}$

= $\frac{K p}{r^{2}}$

C and D are equatorial points. Thus,

$V_{C}$ = $V_{D}$ = $\frac{K p}{r^{2}}$ $c o s$ $90^{\circ}$

= 0

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