A -20 nC source charge is located at the origin, where (x,y) = (0 cm, 0 cm).
What is the strength of the electric field at the position (x,y) = (6.0 cm, 0 cm)?
What is the strength of the electric field at the position (x,y) = (-5.0 cm, -2.0 cm)?
What is the strength of the electric field at the position (x,y) = (3.0 cm, 3.0 cm)?
Sketch a field diagram showing the electric field vectors at these three points.