Circuits, Current and Potential Difference Flashcards
1
Q
A voltmeter
A
.It measures potential difference
.It always connects ‘across’ a component
.’in parallel’
2
Q
An ammeter
A
.It measures current
.it is always connected ‘in line’ with a component
.’in series’
3
Q
An electric current
A
A flow of electric charge
4
Q
What do cells flow from?
A
Positive terminal to negative terminal around the circuit
5
Q
What is current measured in?
A
Amperes (A)
6
Q
What is rate of charge flow measured in?
A
Coulombs (C)
7
Q
…. charge passes around the circuit when a …… current flows
A
More, bigger
8
Q
In a closed loop, the current has the …. Value everywhere on the circuit
A
Same
9
Q
Why do you need potential difference in a circuit?
A
Electrical charge will only flow around the circuit if there is a potential difference
