# Electricity

Equation for Power
Power = Current x Voltage
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In series; What happens to the current & voltage
Voltage is shared; Current is equal
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Equation for Charge
Charge = Current x time
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Equation for Resistance
P.d./ Voltage = Resistance x Current
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Equation for Energy transferred
Energy transferred = P.d/Voltage x Charge
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What colour is the neutral wire?
Blue & it goes left
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What colour is the Live wire?
Brown/Red & it goes right
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What colour is the Earth wire?
Green Stripes & it goes in the centre
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Equation for Work done
Work done = voltage x charge
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In parallel; what happens to p.d/voltage & current?
P.d/Voltage is equal & current is shared1
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Equation for Voltage
Voltage = Current x resistance
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What is direct current?
Flows in one direction; always flows in one direction
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What is alternating current?
Constantly changing which leads form positive to negative constantly
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What current & p.d does the National Grid use?
Low current & High p.d
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What are step up tranformers?
These step up the voltage
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What are step down transformers?
These step down the voltage
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## Other cards in this set

### Card 2

#### Front

In series; What happens to the current & voltage

#### Back

Voltage is shared; Current is equal

### Card 3

#### Front

Equation for Charge

#### Back ### Card 4

#### Front

Equation for Resistance

#### Back ### Card 5

#### Front

Equation for Energy transferred

#### Back 