Problem 3: A qi = -10.0 nC point charge and a q2 = +20.0 nC point charge are 15 cm apart on the x-axis. 1. What is the electric potential at the point on the x-axis where the electric field is zero? 2. What is the electric field at the point on the x-axis, between the charges, where the electric potential is zero? a) In the figure below, where could a point with E = 0 be located (to the left, to the right, or between the charges)? If the distance between this point and q, is , what should its distance from q, be? (use 1921/ly,| = 2 and the fact that electric field strength is proportional to q/r ) Mark the point E = 0 in the figure and compute its coordinate. $15-10nC $2=20nC K= L= ISem b) Compute the electric potential at the point E = 0 as a sum of potentials created in that point by charges qi and qz. c) In the figure below, mark the point between the charges where the electric potential is zero (V = 0). If you just use [qal/|gil = 2 and the fact that electric potential is proportional to q/r, the calculation should be very simple. $1= -10nC $1=20nc K L. ISem d) What is the direction of the electric field E at the point V = 0 (draw the vector in the figure). Compute its magnitude and express E in the vector form