Please enable JavaScript.
Coggle requires JavaScript to display documents.
electricity - Coggle Diagram
electricity
Voltage
Measured in volts (V)
Measured using a voltmeter
Voltmeters are connected in parallel
The difference in the electrical energy between two parts of a circuit
The bigger the difference in energy the higher the voltage
Current
Measured in amps (A)
Symbol of I
measured with an ammeter
Ammeters are connected in series
The rate of flow of an electric charge
national grid
AC (Alternating Current
Distributes electricity around the country
Gets power from power stations
Transformers are used to change current and voltage
Step down transformers are used before reaching the consumer to stop electrocution
Resistance
Opposition of the flow of electrons
R = V/I
Measured in Ohms (Ω)
higher resistance means it is harder for electrons to flow through the conductor
Series circuits
When components are connected next to each other in a single loop
Current is the same between components
Voltage is shared between components
parallel circuits
when components are connected alongside
current is split between branches
Voltage is the same for all component
ohmic and non ohmic conductors
Ohmic conductors have a consistent resistance
Non Ohmic conductors have changing resistance due to heat changes