Determine the voltage on the y-axis at y= 0.5 m for two 2 microCoulomb charges placed on the x axis at x= 1 m and x= -1 m.
Calculate the charge in electric potential energy of the system as a 3rd charged particle of -3 micro Coulombs is brought from infinitely far away to a position on the y axis at y= 0.5 m.