Intro to circuits Flashcards
1
Q
What is a circuit?
A
A closed loop that has a power source (battery/cells) and a vessel for electrons to flow through (wire)
2
Q
What is current, symbol and unit?
A
Measure of the flow of electrons around the circuit, I, amperes (A)
3
Q
What is potential difference, symbol and unit?
A
Force provided by the cell/battery which drives the flow of electrons, V, V
4
Q
What is resistance, symbol and unit?
A
Everything that resists the flow of electrons, R, Ohms (Ω)
5
Q
What do the short and long lines on a cell/battery represent?
A
Longer line - positive terminal
Shorter line - negative terminal
