Dos cargas q1 = 20 x 10-8 y q2 = ‒ 5 x 10-8 C están en el aire colocadas a 10 cm de distancia. Calcular la intensidad del campo eléctrico a la mitad de esa distancia y la fuerza sobre una carga Q = 4 x 10-8 C situada en ese punto.

How does the electric potential energy between two charged particles change if one particle is reduced by a factor of 3? a. increased by a factor of 3 b. it is decreased by a factor of 9 c. it is reduced by a factor of 3 d. it is increased by a factor of 9