1. Which of the following is a vector?
(a) Electric potential.
(b) Electric potential energy.
(c) Electric field.
(d) Equipotential lines.
(e) Capacitance.
2. A + 0.2 μC charge is in an electric field. What happens if that charge is replaced by a -0.2 μC charge?
(a) The electric potential changes sign, but the electric potential energy stays the same.
(b) The electric potential stays the same, but the electric potential energy changes sign.
(c) Both the electric potential and electric potential energy change sign.
(d) Both the electric potential and electric potential energy stay the same.