MAINS ELECTRICITY.

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  • Created by: AmyH11
  • Created on: 09-02-16 19:28
Direct Current.
Current used in cells and batteries that only flows one way.
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Alternating Current.
Current used in mains electricity that changes it direction of current flowing.
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Frequency.
The number of crests of a wave that move past a given point in a given unit of time (Hz)
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Live Wire.
Alternates between positive and negative and is very dangerous. (The blue wire)
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Neutral Wire,
Stays at a potential close to zero relative to Earth. (The brown wire)
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Eath WIre.
Connects the casing of an appliance to stake in the ground. It helps to prevent shock. (The yellow and green wire.)
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Oscilloscope.
A type of electronic test instrument that allows observation of constantly varying signal voltages.
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Breaker (RCCB)
A device that quickly disconnects current to prevent serious harm from an ongoing electric shock.
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Other cards in this set

Card 2

Front

Current used in mains electricity that changes it direction of current flowing.

Back

Alternating Current.

Card 3

Front

The number of crests of a wave that move past a given point in a given unit of time (Hz)

Back

Preview of the back of card 3

Card 4

Front

Alternates between positive and negative and is very dangerous. (The blue wire)

Back

Preview of the back of card 4

Card 5

Front

Stays at a potential close to zero relative to Earth. (The brown wire)

Back

Preview of the back of card 5
View more cards

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