P3.1.2 - Electric Current Flashcards
1
Q
What is current?
A
The rate of flow of charged particles (electrons)
2
Q
What do you need to make a current flow?
A
A power supply (battery)
A complete circuit
3
Q
In a single closed loop, the current everywhere is…
A
… the same
4
Q
Which way do you draw electric current flowing on a circuit diagram?
A
The direction of the positive terminal of the battery to the negative terminal
5
Q
What is conventional current?
A
Positive terminal of battery to negative terminal of battery
Opposite of electron flow
6
Q
What is the equation for charge flow?
A
Charge Flow (C) = Current(A) x Time(s)
7
Q
What is charge measured in?
A
Coulombs (C)
8
Q
What is current measured in?
A
Amps (A)
9
Q
What is 1 milliamp equal to?
A
1 x 10^-3 Amps
