Topic FIVE - Definitions Flashcards
1
Q
What is current?
A
rate of flow of charge in a circuit
2
Q
what is electromotive force?
A
work done per unit charge
3
Q
what is ohms law?
A
under physical conditions; current is directly proportional to p.d
4
Q
what is resistance?
A
pd across the component/current through it
5
Q
what is potential difference?
A
the work done per unit charge
6
Q
what is a superconductor?
A
a material with 0 resistivity when temp > or = to the critical temperature
7
Q
what is a potential divider?
A
2+ resistors in series connected to a source of pd
