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Question

A point dipole of dipole moment p is placed along y-axis, a point charge is placed at x-axis at distance r from point dipole, find net force on dipole due to point charge.

A
2kpr3q0^j
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B
kpr3q0^j
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C
kpr3q0^j
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D
zero because total charge on dipole is zero.
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Solution

The correct option is C kpr3q0^j
Force on point charge due to dipole =qoE
=qo(kpr3)(^j)
By Newton's third law
Fondipole=Fonq0
(action-raction pair)
Fondipole=kpr3q0(+^j)

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