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Cards (17)

Closed loop of electrical components around which current can flow, driven by a potential difference.
Current (in Amps A) is the rate of flow of charge
Potential difference (in volts V) is the work done on charge
When components are connected in series, the same electric current flows through them.
Charge conservation : current cannot disappear!
When components are connected in parallel, the same potential difference drops across them.
Points connected by a wire are at the same voltage!
When there is a junction in the circuit, the inward and outward currents to the junction are the same.
Resistors are the basic components of a circuit that determine current flow
Total resistance increases in series
Total resistance decreases in parallel
Same current is the same in all series elements
In series, voltages add to total circuit voltage
In series, adding resistance increases total R
Current “splits up” through parallel branches
Same voltage across all parallel branches
In parallel, adding resistance reduces total R
String of Christmas lights – connected in series
Power outlets in house – connected in parallel