Daily Practice

GCSE Science

16th July 1990

5 questions · GCSE · 584 questions in this band

1
Efficiency, Power and Energy Resources
A lamp is supplied with 60 J and transfers 6 J as light. Calculate its efficiency as a percentage.
2
Electricity
In a series circuit, the current through one lamp is 0.30 A. State the current through a second lamp in the same circuit.
3
Circuits, Resistance and Components
In a parallel circuit, how do the branch currents relate to the total current?
4
Mains Electricity, Power and Energy
State the potential difference and frequency of the UK mains supply.
5
Particle Model of Matter
Name the change of state when a liquid becomes a gas throughout the liquid, at its boiling point.

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