A particle of charge 2.3 x 10C experiences an upward force of magnitude 5.0 x 10-6 N when it is placed in a particular point in an electric field. (Indicate the direction with the signs of your answers. Assume that the positive direction is upward.) (a) What is the electric field (in N/C) at that point? N/C (b) If a charge q = -1.3 x 10-8 C is placed there, what is the force (in N) on it? N Additional Materials Reading