Daily Practice

GCSE Science

20th November 1991

5 questions · GCSE · 584 questions in this band

1
Efficiency, Power and Energy Resources
Why can no device be 100 percent efficient?
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
What happens to the total resistance when a second resistor is added in parallel, and why?
4
Mains Electricity, Power and Energy
Give the colour and function of the earth wire.
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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