PhysicsCode 9702
Electric potential
What this topic asks you to be able to do
- define the electric potential at a location as the amount of work needed per unit of positive charge to move a small test charge from an infinite distance to that location
- recall and apply the result that the electric field at a given point equals minus the potential gradient at that same point
- apply V = Q/(4πε0r) when finding the electric potential of the field produced by a point charge
- understand how electric potential gives rise to the electric potential energy possessed by a pair of point charges, and apply EP = Qq/(4πε0r)