Capacitors Practice Test

An air-filled parallel-plate capacitor has a capacitance of $$C_0$$. If the area of the plates is tripled and the distance between the plates is halved, what is the new capacitance?

An electron with initial velocity $$v_0$$ enters a region of uniform electric field $$E$$ directed perpendicular to its velocity. The region is between the plates of a large parallel-plate capacitor. Neglecting any edge effects and gravitational forces, which of the following best describes the path of the electron while it is in the electric field?