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33 terms

Electricity Vocabulary

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ammeter
a device used to measure current
charge
an electrical property of particles that causes them to attract and repel each other
voltmeter
a device used to measure voltage, or electrical potential energy difference
electrically neutral
an object that has equal amounts of protons and electrons
direct current
electricity that flows in one direction steadily
switch
a device that opens or closes a circuit
multimeter
an instrument for measuring the properties of an electrical circuit
ampere
unit used to measure electric current
conduction
charging by contact
alternating current
a flow of electric charge that regularly reverses its direction (60 times per second)
open circuit
an incomplete electrical circuit through which no current flows
closed circuit
a complete path through which electric current flows
insulator
material through which electrons do not flow
conductor
material through which electrons flow freely
circuit
a complete pathway for electrons to flow
current
flows in the opposite direction as moving electrons
proton
positively charged particle within the nucleus of the atom
neutron
neutral particle within the nucleus of the atom
electron
negatively charged particle within the atom, but not in the nucleus
attraction
force that acts between unlike charges
repulsion
force that acts between like charges
friction
a method of charging objects by rubbing two objects together
conduction
method of charging; objects touch, allowing electrons to flow between them
induction
method of charging; electric charges are rearranged, no contact is necessary
static electricity
the build up of electric charge
electric/static discharge
the release of electric charge
electroscope
an instrument that detects electric charge
volts
the measurement of the difference in charges between the terminals of a battery; the power in a battery
parallel circuit
a circuit that has multiple pathways through which electrons can flow
series circuit
a circuit that has only one pathway through which electrons can flow
battery
a device that produces electricity by converting chemical energy to electrical energy
resistance
opposition to the flow of electrons; slows down the electrons in a circuit
ohm
unit of resistance