Mains electricity

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  • Created by: Pea_emma
  • Created on: 05-04-13 15:10
An electric current that flows in one direction
Direct current (d.c.)
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An electric current that reverses its direction of flow repeatedly
Alternating current (a.c)
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A thin wire that overheats and melts when overloaded to break an electric circuit; comes with different ratings
Fuse
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A safety device that automatically breaks an electric circuit when it becomes overloaded
Circuit breaker
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Automatic device for breaking a circuit; based on detecting a difference in current between live and neutral wires
Residual current circuit breaker (RCCB)
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Electrical appliances that need no earth connection
Double insulated
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Work done or energy transferred in a given time; units of watts; P = E/t and P = I x V
Power
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A property of elementary particles; comes in two forms- positive and negative
Charge
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Other cards in this set

Card 2

Front

An electric current that reverses its direction of flow repeatedly

Back

Alternating current (a.c)

Card 3

Front

A thin wire that overheats and melts when overloaded to break an electric circuit; comes with different ratings

Back

Preview of the front of card 3

Card 4

Front

A safety device that automatically breaks an electric circuit when it becomes overloaded

Back

Preview of the front of card 4

Card 5

Front

Automatic device for breaking a circuit; based on detecting a difference in current between live and neutral wires

Back

Preview of the front of card 5
View more cards

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