current and charge Flashcards
1
Q
what is the size of an electric current?
A
the rate of flow of electric charge
2
Q
what is electric charge?
A
the electrical state of an object which can be positively or negatively charged
3
Q
can current flow if the circuit is broken?
A
no
4
Q
when does an electric current flow?
A
when electrons move through a conductor, such as a metal wire. Metals are good conductors of electricity.
5
Q
what is current?
A
the flow of negatively charged electrons, from negative to positive
6
Q
what is the equation for current?
A
current, I (amps, A) = charge of flow, Q (coulombs, C)/time, t (s)
