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Daily Practice

GCSE Science

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28th July 1991

5 questions · GCSE · 584 questions in this band

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  1. 1
    Energy Stores, Transfers and Calculations

    Name four energy stores.

  2. 2
    Efficiency, Power and Energy Resources

    Why can no device be 100 percent efficient?

  3. 3
    Electricity

    A component has a current of 5.0 A and a resistance of 8.0 ohm. Calculate the power dissipated using P = I^2 x R.

  4. 4
    Circuits, Resistance and Components

    What happens to the total resistance when a second resistor is added in parallel, and why?

  5. 5
    Mains Electricity, Power and Energy

    Give the colour and function of the earth wire.

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