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Electrical Power

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    Trivia about electricity
  •   Study   Slideshow
  • What is the term for the rate of flow of charge around a circuit?
    Current
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  • What is the term for the "energy transferred per unit charge"?
    Voltage (potential difference)
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  • What is the unit for resistance in a circuit?
    The Ohm
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  • What is the unit for current in a circuit?
    Amps (A)
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  • What colour is the live wire in a plug?
    Brown
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  • What colour is the neutral wire in a plug
    Blue
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  • What colour is the earth wire in a plug?
    Yellow and green
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  • If my PS4 runs with a current of 3A, which fuse should I choose to put in the plug for the PS4: 2A, 4A, 15A?
    4A
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  • What is the term for the rate of energy transfer?
    Power
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  • What is the unit of power?
    Watt (W)
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  • What is the name of the network of cables and transformers that bring electricity to our homes?
    The national grid
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  • What is the voltage of the UK mains electricity?
    230V
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  • What is the Ohms law equation?
    V = I x R
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  • Why is the voltage stepped up to nearly 400 kV whilst the electricity travels across the cables in the national grid.
    To reduce energy lost by heating in the cables.
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  • Why is the voltage stepped down by a transformer, to 230V before it enters our homes?
    Safety.
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  • What is the difference between an A.C supply and a D.C supply?
    D.C one direction, constant size. A.C changing direction and changing size.
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