What is the strength of the electric field of a point charge of magnitude +4.8 × 10^-19 c at a distance of 4.0 × 10^-3 m? a. 3.6 × 10^-4 n/c b. -2.7 × 10^-4 n/c c. -3.6 × 10^-4 n/c d. 2.7 × 10^-4 n/c

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.