A 2.0 nC point charge is held stationary in an arbitrary electric field. The electric potential at the point that the charge is being held is 4.5 V.

1. What is the potential energy of the charge? Assume that the potential energy is zero at points where the potential is zero and give your answer in electron volts (eV).

2. If you moved the charge to a point where the electric potential is 6.4 V. How much work is required by you to move it?

3. How much work would be required by you to move a 3.0 C charge between the same two points?