Measuring Electricity (Leaving Cert Construction Studies): Flashcards
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Practise the cards
10 cards from this deck
What is electricity?
What is electricity?
Movement of electrons along conductive material
Unit for measuring electric current
Unit for measuring electric current
Ampere (A) or amp
What is electric current?
What is electric current?
Flow of electrons
Most common metal for conducting electricity
Most common metal for conducting electricity
Copper
What is voltage?
What is voltage?
Force that drives current through an electrical circuit
Unit for measuring resistance
Unit for measuring resistance
Ohms
What is resistance?
What is resistance?
Opposition to electron flow
Formula for wattage
Formula for wattage
(Watts = Voltage × Current)
Three main components of a basic circuit
Three main components of a basic circuit
Power source, electrical device, switch
What does a closed switch do?
What does a closed switch do?
Completes the circuit and allows current to flow