Electric Currents. Topic 5 .1 Electric potential difference, current and resistance. Electric Potential Energy. If you want to move a charge closer to a charged sphere you have to push against the repulsive force You do work and the charge gains electric potential energy.
Topic 5.1 Electric potential difference, current and resistance
(joules) (coulombs) (volts)
only 1.6 x 10‑19 C.
Or I = Δq/ Δt
Current is the rate of flow of charge