Revision Flashcards
Ammeter?
Used to measure electrical current
Ohmmeter
Used to measure electrical resistance
Voltmeter
Used to measure potential difference
Amps (A)
Unit of measurement for electrical circuit
Ohms
Unit of measurement for electrical resistance
Volts (V)
Unit of measurement for potential difference
LED
Light emitting Diode
LDR
Light dependant resistor
Electrons
An object becomes negatively charged when it gains these
Insulator
A material that doesnt allow the flow of charge through it
Charged atom
When there is a difference between the number of protons and elctrons
Positive charge
Less electrons than protons
Negative charge
More electrons than protons
Static electricty
Generated when an object becomes charged
Electric discharge
The rapid transfer of electrons from one object to another
Potential difference
The difference between the electric potential at two points in a circuit
Electrical current
The flow of electrical charge (measured in amps)
Resistance 
The opposition to the flow of electrons in a circuit (measured in ohms)
Electric power
The rate at which electrical energy is either produced or consumed
Series circuit
Only one path of which electrons can flow
Parallel circuit
More than one path of which electrons can flow
