Question: A -10.0 nC point charge and a +20.0 nC point charge are 15.0 cm apart on the x-axis.
What is the electric potential at the point on the x-axis where the electric field is zero?
What is the magnitude of the electric field at the point on the x-axis, between the charges, where the electric potential is zero?
What is the direction of the electric field at the point on the x-axis, between the charges, where the electric potential is zero?