Electricity Flashcards
1
Q
define electricity.
A
the flow of electrons around a circuit and they actually flow from negative to positive (unless conventual)
2
Q
define current and what it is measured in.
A
the rate of flow of charge - measured in coulombs per second (C/S) or Amps (A).
3
Q
define Potential difference and its measurement.
A
the work done in a moving unit charge from one point to another - measured in voltage (V).
4
Q
define resistance
And how it can be increased
A
How much a material tries to stop electricity passing through
increased when: length of wire is increased, the wire is thin.
