Electricity 2 Flashcards
Electrical current
Steady flow of charged particles
Current electricty
Charges move around a circuit
What is required for the electrical current to flow continuously
Requires an energy source
Has to be a complete path or circuit for particles
Load
Used to convert electrical energy into another type of energy
Most circuits will have
Conductor, energy source and load
Conductor
Conducts electricty through a circuit
Cell
Stores electricty
Long bar is positive
Battery
Combination of two or more cells
Lamp/lightbulb
Converts electricty to light
Resistir
Controls amount of current in a circuit
Switch
Opens and closes a circuit
Allows electricty to flow
Ammeter
Measures how much current in a circuit
Voltmeter.
Measures voltage across the circuit
Rheostat
Variable resistor
Motor
Converts electricty to mechanical energy
Fuse
Melts if current is to high
Rate that an elevtrc current flow is measured in
Amp here’s
Current symbol is I
Amos symbol is A
Galvanometer
- used to measure currents to small for ammeter
(Ammeter measures big currents)
Unit of voltage
Volt V
Symbol and unit are both capital V
D C AA and AAA
All produce 15 volts differ in size