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  4. Six negative equal charges are placed at the vertices of a regular hexagon. 6q charge is placed at the centre of the hexagon. Find the electric dipole moment of the system. <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/p-yskl9aap3tcb6foy.jpg />

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Q. Six negative equal charges are placed at the vertices of a regular hexagon. $6q$ charge is placed at the centre of the hexagon. Find the electric dipole moment of the system.
Question

NTA AbhyasNTA Abhyas 2022

Solution:

This system is a combination of six equal dipoles each of dipole moment $p_{0}=qa$
Solution
From the polygon law of vector,

$\Sigma \overset{ \rightarrow }{\text{p}} = 0$