electricity Flashcards
1
Q
only when can a current flow?
A
when a circuit is complete
2
Q
what is an electric field?
A
a space around a charged object which will feel a force
3
Q
driving force=?
A
potential difference
4
Q
what is an electric current?
A
flow of charge around a circuit
5
Q
what are insulators?
A
materials which don’t allow charges to easily pass through them
6
Q
resistance equation
A
potential difference ÷ current
7
Q
what are moving charges?
A
negative electrons
8
Q
what is resistance?
A
anything that slows a current
