P2 - Current And Potential Difference Flashcards
When will current only flow?
When there is a potential differences across the component.
What unit is current measured in?
Ampere, A.
What is potential difference? The
The work done per coulomb of charge between 2 points.
Its the driving force that pushes current.
What unit is potential difference?
Volt, V.
What is resistance in a circuit?
Anything in the circuit which slows the flow down.
What unit is resistance measured in?
Ohms.
The greater the resistance, the _____ the current that flows.
Smaller.
What is charge measured in?
Coulombs, C.
What does the total charge in a circuit depend on? [2]
The current & the time.
What is the relationship between voltage & potential difference?
They’re the same thing.
What is the definition of current?
The rate of flow of electronic charge round a circuit.
