Problem1 (a). Show that the potential at a distance r from a point charge with a charge q, with...

Problem1 (a). Show that the potential at a distance r from a point charge with a charge q, with reference to the infinity is given by V-ka/r (b). Three point charges initially are infinitely far apart. Then, as Figure below shows, they are brought together and placed at the corners of an equilateral triangle. Each side of the triangle has a length of 0.50 m. Determine the electric potential energy of the triangular group 9:” +6.0pc