P4

What is static Electricity?
When an insulating Material rubs another insulating material and becomes charged due to transfer of electrons
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How do you redcie the dangers of statice Electricity?
Earth appliances, Use insulating mats, Wear insulating shoes
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How do Defibrillators work?
2 charged paddles are charged & put on patients chest. Defibrillator discharges into patient & makes Heart contract
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How do Dust Precipitators work?
Metal plates are installed in Chimney & connected to high volatage. Dust passes through grid & is charged. Dust paritcles are attracted to negative plates.
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How can you use Electrostatics to paint cars?
1. Paint gun is - charged. 2. Paint particles become - charged so they repel away from each other. 3. Panel/ car is + charged. 4. Paint is attracted to panel & spreads evenly. Panel becomes neutral.
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How do electrons flow around a curcuit?
Electrons flow from negative to positive Electrode
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What is a 'fixed resistor'?
A compenent with constant resistance.
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How is current is proportional to voltage?
AS current increases, voltage increases
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What are the roles of the brown, blue and Green & yellow wires in a plug?
Brown= Live wire, carries current. Blue= Neutral, carries current away. Green= SAftey wire, stops live appliance
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What is a fuse & how does it work?
Used to prevent appliances from overheating. If the fuse becomes too hot it melts or breaks
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Why must the current of an appliance be slightly higher than the appliance itself?
So that the fuse doesn't break when the appliance is at normal current.
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Other cards in this set

Card 2

Front

How do you redcie the dangers of statice Electricity?

Back

Earth appliances, Use insulating mats, Wear insulating shoes

Card 3

Front

How do Defibrillators work?

Back

Preview of the front of card 3

Card 4

Front

How do Dust Precipitators work?

Back

Preview of the front of card 4

Card 5

Front

How can you use Electrostatics to paint cars?

Back

Preview of the front of card 5
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