A system of point charges includes q1= +1 microC at
x1= 2m, y1= 2m; q2= -1 micro C at
x2= -3m, y2= -3m; q3= +3 microC at
the origin.
a) What is the electrical potential (i.e. the voltage) at
location x=1m, y= -1m?
b) What is the electrical potential energy UE (i.e. PE) of the
system of charges?
c) What is the electrical field Ex and Ey
components, magnitude E, and directional angle at x= -2m, y=
3m?