Term | Definition |
Current | Flow of electricity (I) |
Amp | Unit for measuring current (A) |
Ammeter | Instrument for measuring current |
Cell | Source of electricity from a battery |
Component | A part of a circuit with a special function |
Filament | Thin wire that glows when a bulb is on |
Power pack | Source of electricity from the mains |
Charges | Tiny particles that flow around a circuit |
Parallel circuit | Circuit in which electrons have more than one path to take |
Series circuit | Circuit in which there is only one path for electrons to take |
Across | Connecting a circuit in parallel |
Resistance | How difficult it is for electricity to flow |
Resistor | A component that creates resistance |
Variable resistor | A resistor whose resistance can be changed |
Voltage | How much energy is transferred by electricity (V) |
Volt | Unit of voltage (V) |
Voltmeter | Instrument that measures voltage |
Cable | Wire that runs off the mains and contains three separate wires |
Cable grip | Plug that holds the wires in the pins |
Circuit breaker | Devices that switches off electricity if current is too large |
Earth wire | Green and yellow wire for safety |
Live wire | Brown wire |
Neutral wire | Blue wire |
Fuse | Thin wire that protects a circuit from too much electricity |
Fuse rating | Largest current a fuse can take before melting |
Ring main | Type of parallel circuit used in house wiring |