Edexcelā¢GCSEā¢Physics
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Electromagnetic Induction
Generators, transformers and the National Grid
Practice 25 subtopics in Electromagnetic Induction. All questions match the Edexcel GCSE specification.
About Electromagnetic Induction
Electromagnetic Induction is a key topic in the Edexcel GCSE Physicsspecification. This topic covers generators, transformers and the national grid.
Master all 25 subtopics below with unlimited AI-generated questions. Each subtopic page includes sample questions and the ability to generate unlimited practice questions with detailed solutions.
All Subtopics (25)
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Inducing potential differenceFactors affecting induced potential differenceMoving magnet into/out of coilMoving wire through magnetic fieldGenerator effectAC generators (alternators)Structure of AC generatorSlip ringsOutput of AC generatorDC generatorsComparing AC and DC generatorsMicrophonesTransformer constructionPrimary and secondary coilsIron coreHow transformers workStep-up transformersStep-down transformersTransformer equation (Vp/Vs = Np/Ns)Transformer efficiency (H)Power equation (VpIp = VsIs) (H)National GridWhy high voltage transmission is efficientStep-up and step-down transformers in the gridReducing power loss (P = IĀ²R)
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