Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
3rd November 2024
- 1Physics Required Practicals and Uncertainties
How is the uncertainty in a set of repeated readings usually estimated?
- 2Energy
A motor is supplied with 800 J of energy and wastes 240 J as heat. Calculate its efficiency as a percentage.
- 3Energy Stores, Transfers and Calculations
What happens to the energy described as 'wasted' in a transfer?
- 4Efficiency, Power and Energy Resources
Define power and give its unit.
- 5Electricity
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.
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