A. electric field lines originate from positive charges and terminate on negative charges. an electric force experienced by a positive test charge will point in the same direction as the electric field, while the force experienced by a negative test charge will point in the opposite direction. b. electric field lines originate from both positive and negative charges. an electric force experienced by a positive or negative test charge will always point in the same direction as the electric field. c. electric field lines originate from positive charges and terminate on negative charges. an electric force experienced by a positive or negative test charge will always point in the same direction as the electric field. d. electric field lines originate from both positive and negative charges. an electric force experienced by a positive test charge will point in the same direction as the electric field, while the force experienced by a negative test charge will point in the opposite direction.