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Electric circuits
Descrição
Electric circuit revision
Sem etiquetas
electric circuit physics electricity gcse
physics
gcse
electricity
physics
gcse
Mapa Mental por
Liv Gran
, atualizado more than 1 year ago
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Criado por
Liv Gran
quase 8 anos atrás
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Resumo de Recurso
Electric circuits
electric charge
insulating materials become electrically charged when are rubbed together
A substance that gains electrons becomes negatively charged
while a substance that loses electrons becomes positively charged.
Attraction & repulsion
Two negative charges placed near each other will repel each other, and so will two positive charges.
If they have opposite charges they will attract each other.
Electrically charged objects can attract small uncharged objects that are close to them
Metals
Metal atoms release some of their electrons
these electrons are free to move through the structure of the metal.
This is why metals are good conductors of electricity.
Current
Strength of an electric current is measured in Amps
Amps= Watts / Volts
Amps are a measure of how much electric charge is flowing around the circuit
Types of circuits
Series
closed circuit in which the current flows in one path
the current through each load is the same & the total voltage across the circuit is the sum of the voltages across each load
Parallel
circuit is divided into 2 or more paths
Anexos de mídia
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