1. Sketch the electric field lines for a positive point charge.
2. If the point charge above has a magnitude Q=1.25^-13 C, what is the electrostatic potential at points r = 1.0 cm, 2.0cm, 4.0 cm, 8.0 cm, and 10.0cm? What are the shapes of the corresponding equipotential lines?
3. Describe how your answers would change above if you had a negative charge with the same magnitude.