2 positive charges each is 4 micro C located at the positions (0,0) and (20,0) and all coordinates are in cm
a) calculate the electric field due to the two charges at the point (0,20)?
b) how much work is done in moving a 2micro C charge from the point (10,10) to (30,0)?
c) what is the electric potential at (10,10) due to the existence of the 2 charges and a third charge of -5micro C at the point (20,20)?