Physics - P5: National grid

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11 Terms

1
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Step-up transformer

Raises the voltage/potential difference

<p>Raises the voltage/potential difference</p>
2
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Power generator

A device that converts other forms of energy into electrical energy

<p>A device that converts other forms of energy into electrical energy</p>
3
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National grid network

A network of high-voltage power cables that carry electricity

<p>A network of high-voltage power cables that carry electricity</p>
4
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Step-down transformer

Reduces the voltage/potential difference

<p>Reduces the voltage/potential difference</p>
5
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A.C

Alternating current

6
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D.C

Direct current

7
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Fuse

A safety device with a thin wire that melts and breaks the circuit if the temperature is too high

-This protects the cable from overheating and catching fire

<p>A safety device with a thin wire that melts and breaks the circuit if the temperature is too high</p><p>-This protects the cable from overheating and catching fire</p>
8
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Live wire

-Brown wire

-Carries an A.C

-230V

<p>-Brown wire</p><p>-Carries an A.C</p><p>-230V</p>
9
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Neutral wire

-Blue wire

-Completes the circuit

-0V

<p>-Blue wire</p><p>-Completes the circuit</p><p>-0V</p>
10
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Earth wire

-Green and yellow wire

-Safety wire that makes a low resistance path from appliances with metal casings to the earth (grounding)

-This is done because the live wire can make the case live and electrocute people who touch it, so the earth wire makes sure that they don't

<p>-Green and yellow wire</p><p>-Safety wire that makes a low resistance path from appliances with metal casings to the earth (grounding)</p><p>-This is done because the live wire can make the case live and electrocute people who touch it, so the earth wire makes sure that they don't</p>
11
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Plug diagram

<p></p>