ull,{"backHref":"/gcse/physics/edexcel/questions","basePath":"/gcse/physics/edexcel/efficiency-and-energy-resources/questions","formulaUrl":null,"initialIndex":48,"initialQuestionWindow":[{"id":"9f9d7ba1-2bed-4ae8-98ef-467cd7f582c9","revisionId":"cdc99ac2-cad1-4741-99d5-6314b7679a13","questionNumber":null,"questionType":"LA","specification":"An engineer tests a prototype solar-powered micro-UAV. The micro-UAV has a rectangular photovoltaic solar panel integrated into its wing, as shown in the diagram below.\n\n![Schematic diagram of a micro-UAV wing with an integrated rectangular solar panel of length 15 cm and width 12 cm.](https://assets.mathsgenie.co.uk/aqa-qb/812bd6a0-441f-4463-8870-3ff4f1f1a439.png)\n\nEach second, $0.45\\text{ J}$ of light energy reaches $1\\text{ cm}^2$ of the solar panel.","difficulty":3,"difficultyBand":"medium","totalMarks":3,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"997828c6-fbe9-4854-9091-75cb50010f88","label":null,"content":"Calculate the total amount of energy reaching the entire solar panel in 1 second.","markscheme":"- Calculates the surface area of the rectangular solar panel: $\\text{Area} = 15 \\times 12 = 180\\text{ cm}^2$ M1\n- Multiplies the area by the energy per unit area: $\\text{Total Energy} = 180 \\times 0.45$ M1\n- States the final energy value: $81\\text{ J}$ A1","marks":3,"order":0,"markingRubric":null,"explanation":{"methods":[{"id":"area_then_energy","label":"Area then energy","steps":[{"type":"hyper_latex","block":{"nodes":[{"latex":"\\htmlData{anchor=area-calculation}{A = 15\\ \\mathrm{cm}\\times 12\\ \\mathrm{cm}}"},{"latex":"\\htmlData{anchor=area-result}{A = 180\\ \\mathrm{cm}^{2}}"}],"connections":[{"to":"area-result","from":"area-calculation","color":"sky","label":"multiply"}]},"order":1,"title":"Calculate the panel area","description":"The panel is rectangular, so multiply its length by its width. This earns the first method mark."},{"type":"hyper_latex","block":{"nodes":[{"latex":"\\htmlData{anchor=energy-calculation}{E = 180\\ \\mathrm{cm}^{2}\\times 0.45\\ \\mathrm{J\\ cm}^{-2}}"},{"latex":"\\htmlData{anchor=energy-result}{E = 81\\ \\mathrm{J}}"}],"connections":[{"to":"energy-result","from":"energy-calculation","color":"orange","label":"multiply"}]},"order":2,"title":"Scale up the energy","description":"Each square centimetre receives the stated amount of energy in one second. Multiply by the whole panel area for the second method mark. State the final answer with its unit: 81 J. This earns the final mark."}]}],"generatedAt":"2026-07-22T12:01:05.447Z","modelVersion":"gpt-5.6-terra+diagrams-1","explanationVersion":"v3"},"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"aa4ccf5c-ae53-437e-86e7-b79fadfa6ade","revisionId":"f54dd74d-b145-4309-9725-83740dc4b66f","questionNumber":null,"questionType":"LA","specification":"","difficulty":3,"difficultyBand":"medium","totalMarks":3,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"7dca667c-3f33-466a-9785-4e20e8d8c11d","label":null,"content":"Explain two reasons why many countries are increasing the proportion of electricity generated from renewable energy sources, such as wind and solar, rather than fossil fuels.","markscheme":"- Explains that renewable sources do not release greenhouse gases (such as $CO_2$) during operation, helping to mitigate global warming / climate change B1\n- Explains that fossil fuels are finite/will run out, whereas renewable resources are sustainable and will not run out B1\n- Explains that relying on domestic renewable energy improves energy security by reducing dependence on imports, or that renewable energy has become more cost-effective B1","marks":3,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"b9327c0b-dc21-41b5-90ce-18fa981ad276","revisionId":"1fcbc5cb-7cb2-43dd-933f-4611c77e7a61","questionNumber":null,"questionType":"LA","specification":"An industrial conveyo

Efficiency and energy resources

Question 12

Efficiency and energy resources Questions

Efficiency and energy resources

Question 12

Efficiency and energy resources Questions