Do free electrons travel to region of higher potential or lower potential?

Would electrons move from higher potential to lower potential or vice versa?

Define electric potential at a point. When kept in an electric field, does a proton move form lower to higher potential or from higher to lower potential region?

In a region of constant potential.

Which of the following quantites do not depend on the choice of zero potential or zero potential energy?

The unit of potential is:

Fill in the blanks: The movement of charge carriers from a region of higher concentration to a region of lower concentration is called.........(drift, diffusion)