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Dipole Moment

Charge + q is...

Question

Charge +q is uniformly distributed on a circular ring of radius R and a point charge -q is placed at a distance y from the center of the ring on its axis. The magnitude of dipole moment of this system is.
[where q = 2C and y = 3m, R = 4m]

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Solution

p = qy = 2 $\times$ 3 = 6 C-m

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