electricity Flashcards
(16 cards)
what is current measured in
amps
what is a current
the flow of charge through a circut
in metals what is the reason for currents
electrons
what is current measured with
an ammeter
what is potential difference measured in
volts
what is it measured with
a voltmeter
the higher the difference the higher the…..
current
what is resistance measured in
ohms
the greater the resistance the what
the harder it is for the current to flow
what is the current directly proportional in
a resistor in a constant temperature
what is a series
components that are connected in a loop and have an equal current
what are the hazards of mains electricity
fuses, a circuit breaker , double insulation and earthing cable
what does the fuse do
it is a piece of wire that metls when the temperature gets too high
what does the circut breaker do
it is a piece of magnet that breaks the circut in need of safety
what does the earthing cable do
it grounds the electricity to reduce the risk of shock
what is double insulation
it is a cable that has a plastic wrap ovr the electrical wires
