A small-scale domestic wind turbine has a power rating which varies from 0.8 kW0.8\text{ kW}0.8 kW to 5.0 kW5.0\text{ kW}5.0 kW.
The wind turbine generator has an electrical resistance of 24 Ω24\text{ }\Omega24 Ω. During a period of strong wind, it generates a current of 11 A11\text{ A}11 A. Calculate the power output in kW\text{kW}kW of the generator under these conditions. Round your answer to one decimal place.
Suggest why the manufacturer gives a range of 0.8 kW0.8\text{ kW}0.8 kW to 5.0 kW5.0\text{ kW}5.0 kW for the power rating of this wind turbine.
Explain why relying solely on this wind turbine may be an unreliable source of power for an off-grid household.
39 exam-style questions on OCR GCSE Physics Powering Earth. Each one has a worked solution and a mark scheme showing where the marks go.