P4 Flashcards
Current
Rate of flow electric charge
Charge flow
The number of coulombs of electric charge flowing through a component in a given time
Potential difference
The energy transferred or the work done by each coulomb of charge that passes through a component
Series circuit
A circuit where all the components are connected together in a loop after the other
Parallel circuit
A circuit where the components are connected in different branches
Resistance
A measure of how easily electricity can pass through a component
Unit of current
Amps
How we measure current
Ammeter
Unit for potential difference
Volts
Describe how we measure potential difference
Voltmeter
Unit of resistance
Ohms
Potential difference
Work done between two points in a circuit
Resistance
Materials that oppose the flow of current
What happens to the resistance as a wire gets longer
Resistance increases
