In a Cartesian coordinate system (x,y,z) between the two points P1= (1 cm, 2 cm, 1
cm) and P2= (4 cm, 2 cm, 6 cm) there is an electrical field which directs along the connection line from P1 to P2 at any point. The magnitude of the electrical field increases like 5V
, where s is the distance from point P1. Calculate the electrical potential at a distance of 2 cm from Point P1 when the electrical Potential at a distance of 4 cm from Point P1 is zero.