Daily Practice · GCSE Science

Daily Practice - GCSE Science

11th January 1995

5 questions · GCSE · 584 questions in this band

1
Efficiency, Power and Energy Resources
Why can no device be 100 percent efficient?
2
Electricity
A current of 2.0 A flows through a resistor for 30 s. Calculate the charge that flows. Use Q = I x t.
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
State the correct SI unit for density.

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