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Tutor HuntTest QuestionsPhysics QuestionsYear 10 Physics Questions

 

Energy Transfers In A System (GCSE Physics)

The following is a GCSE Physics test covering 'Energy Transfers In A System' from the broader topic Energy. The test is geared towards the AQA exam board style syllabus.
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Below a typical questions that will be covered in this test. You final score will be logged on your account

A child does 35 J of work pushing a walker 2.8 m. What horizontal force did the child apply (N)?
The energy required to melt 0.015 kg of ice was 5010 J. What is the specific latent heat of fusion of water (J/kg)?
When a moving car brakes, which energy store increases in the brakes?
A pavement tile produces 40 V and 4.4 W when stepped on. What current flows (A)?
Which equation gives gravitational potential energy (?E) in terms of mass m, gravitational field strength g and change in height h?
A transmission cable has a power loss of 1.60 × 10^9 W and the current is 2000 A. What is the resistance of the cable (O)? (Use P = I^2 R)
Which equation links efficiency, useful energy output and total energy input?
A generator transfers 3.0 kW of power. How long does it take to transfer 2.16 × 10^7 J? Give your answer in standard form (seconds).
If 40% of the energy stored in the water is wasted, what is the useful energy (in kJ) from 33 600 kJ?
Which equation links momentum p, mass m and velocity v?
An LED has total power input 4.0 W and efficiency 0.85. What is the useful power output (W)?