Back to Electricity & Circuits (ELL)

Study Guide

Quick meanings for every word.

WordMeaning
ElectricityPhenomena involving electric charge, including charges at rest and charges moving as a current.
Parallel CircuitA circuit with more than one path for current.
Series CircuitA circuit with only one path, so every part shares the same current.
AtomThe smallest unit of an element that keeps that element’s chemical identity.
ElectronA particle with negative electric charge found outside an atom’s nucleus.
Power SourceSomething that supplies energy to a circuit, like a battery, generator, or solar cell.
Circuit SwitchA part that opens or closes a circuit.
ProtonA particle with positive electric charge found in an atom’s nucleus.
NeutronAn electrically neutral particle found in most atomic nuclei.
Closed CircuitA circuit with no breaks, so current flows.
Open CircuitA circuit with a break, so current cannot flow.
RepelTo push away.
AttractTo pull toward.
CircuitA complete path that electricity can flow through.
LightningA powerful example of electrostatic discharge from static electricity.
ConductorA material that allows thermal energy or electric charge to move through it relatively easily; the context tells which property is meant.
InsulatorA material that strongly resists the transfer of thermal energy or the movement of electric charge; the context tells which property is meant.
Static ElectricityAn imbalance of electric charge on an object or surface.