Some modern hiking backpacks feature a kinetic energy-harvesting system designed to charge electronic devices while walking.
The diagram below shows the mechanism of this energy harvester situated inside the backpack's frame:
Explain how the vertical (up-and-down) movement of the hiker during a walk causes an electrical current to be generated and delivered to the battery charger.
Induced potential, transformers and the National Grid (physics only) (HT only) Questions
Practise AQA GCSE Physics Induced potential, transformers and the National Grid (physics only) (HT only) with exam-style questions for Foundation and Higher tier. 15 questions covering Induced potential (HT only), Uses of the generator effect (HT only), Microphones (HT only), and Transformers (HT only), matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.