physics yr 10 AP1 Flashcards
1
Q
What is electric current?
A
Electric current is a flow of electrical charge. Electrical charge will only flow round a complete (closed) circuit if there is a potential difference.
2
Q
What is potential difference?
A
Potential difference (or voltage) is the driving force that pushes the charge round.
3
Q
What is resistance?
A
Resistance is anything that slows the flow down.
4
Q
What is the formula for calculating charge flow?
A
Q = It
5
Q
Why is it important to learn circuit diagram symbols?
A
You need to be able to understand circuit diagrams and draw them using the correct symbols.
