Three short electric dipoles each of dipole moment P are placed at the vertices of an equilateral triangle of side length L Each

Question

Three short electric dipoles each of dipole moment P are placed at the vertices of an equilateral triangle of side length L Each dipole has its moment oriented parallel to the opposite side of the triangle as shown in the fig The electric field strength at the centroid o Then value of a is the triangle is a KP L P L P L L P

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