12. If a built-up charge isn't moving, we call it?

When touching metal doorknobs, for example; electrons can jump and give you electric shocks. Static charges build up on clouds untl the cant hold any more charges, at that point, lightning can occur. The study of electricity is where charges are not moving, and this is called electrostatics

Explanation:

potential energy is directly proportional to height.

more height = more potential energy.

greatest increase in height = greatest increase in potential energy

where are the points with the greatest increase in height ?

has to be c-e or d-e .

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete