Electric Current and Resistance PDF

resistance - opposes the flow Potential difference or (voltage) is the driving force which pushes the charge round Unit of potential diffrene: Volt, V Resistance is anything in the circuit which slows the flow down Unit of resistance: ohm Potential difference of supply provides the ‘push’ Curent...

resistance - opposes the flow Potential difference or (voltage) is the driving force which pushes the charge round Unit of potential diffrene: Volt, V Resistance is anything in the circuit which slows the flow down Unit of resistance: ohm Potential difference of supply provides the ‘push’ Curent is the flow of electric charge electric current is the flow of electric charge round the circuit. current will flow around a complete (closed) circuit if there's a potential diference. (voltage) so the curcent can only flow if there is a source of potential difference Unit of current: ampere, A In a single, closed loop the current has the same value everywhere in the circuit.