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
only 1.6 x 10‑19 C.
Or I = Δq/ Δt
Current is the rate of flow of charge