Daily Practice

GCSE Science

3rd November 1991

5 questions · GCSE · 584 questions in this band

1
Physics Required Practicals and Uncertainties
How is the uncertainty in a set of repeated readings usually estimated?
2
Energy
A kettle transfers 360000 J of energy in 150 s. Calculate its power in watts.
3
Energy Stores, Transfers and Calculations
What happens to the energy described as 'wasted' in a transfer?
4
Efficiency, Power and Energy Resources
Define power and give its unit.
5
Electricity
A component has a current of 5.0 A and a resistance of 8.0 ohm. Calculate the power dissipated using P = I^2 x R.

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