Daily Practice · GCSE Science

Daily Practice - GCSE Science

7th August 1996

5 questions · GCSE · 584 questions in this band

1
Efficiency, Power and Energy Resources
Why can no device be 100 percent efficient?
2
Electricity
Two resistors are connected in parallel across a 12 V battery. State the potential difference across each resistor.
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
Calculate the energy needed to melt 0.50 kg of a substance with a specific latent heat of fusion of 210000 J/kg.

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