coe Flashcards
1
Q
electric current
A
rate of flow of charge
2
Q
resistance
A
ratio of potential difference across the component to the current passing through it
3
Q
emf
A
work done per unit charge where chemical energy is converted into electrical energy as the charge is driven around the complete circuit
4
Q
pd (across device)
A
work done per unit charge electrical energy converted to other forms of energy as the charge passing through the device
5
Q
power
A
rate of work done
6
Q
resistivity
A
measure of
how strongly a material opposes electric current
& characterises the resistance of materials @ a fixed temp.,
regardless of the materials’ dimension shape & sizes
