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Daily Practice

GCSE Science

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19th January 1993

5 questions · GCSE · 584 questions in this band

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  1. 1
    Energy

    A motor is supplied with 800 J of energy and wastes 240 J as heat. Calculate its efficiency as a percentage.

  2. 2
    Energy Stores, Transfers and Calculations

    Define specific heat capacity.

  3. 3
    Efficiency, Power and Energy Resources

    A lamp is supplied with 60 J and transfers 6 J as light. Calculate its efficiency as a percentage.

  4. 4
    Electricity

    A resistor of resistance 15 ohm is connected to a 6.0 V supply. Calculate the current flowing through it. Use V = I x R.

  5. 5
    Circuits, Resistance and Components

    In a parallel circuit, how do the branch currents relate to the total current?

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