Three identical positive charges are arranged at the vertices of an equilateral triangle

PHYSICS · Subjective · AP · Physics C: Electricity and Magnetism · Electric Charges Fields and Gauss's Law · Electric Charges Fields and Gauss's Law

Problem

Three identical positive charges

Q

are arranged at the vertices of an equilateral triangle. The side of the triangle is

a

. Find the intensity of the field at the vertex of a regular tetrahedron of which the triangle is the base.