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The electric field does not physically emanate from the charge, q1, but its influence exists at every point in space such that if another charge, q2, were to exist at a distance R from q1, then q2 would experience a force acting on it equal in strength to F21. The electric field of two or more point charges is the vector sum of the electric fields of each charge. The electric field of a charge distribution is the vector sum (integral) of the distribution of charges.