OCR•GCSE•Physics
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P4: Magnetism and Magnetic Fields
Magnets, magnetic fields and uses of magnetism
Practice 31 subtopics in P4: Magnetism and Magnetic Fields. All questions match the OCR GCSE specification.
About P4: Magnetism and Magnetic Fields
P4: Magnetism and Magnetic Fields is a key topic in the OCR GCSE Physicsspecification. This topic covers magnets, magnetic fields and uses of magnetism.
Master all 31 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 (31)
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Magnetic poles: north and southLike poles repel, unlike attractMagnetic vs non-magnetic materialsPermanent and induced magnetsMagnetic field lines and directionField patterns around bar magnetsField strength variation with distanceEarth's magnetic fieldCompass and Earth's coreMagnetic field of current-carrying wireRight-hand grip ruleField around a straight conductorField strength: current and distance factorsSolenoid magnetic fieldIncreasing solenoid field strengthElectromagnets and applicationsForce on a current-carrying conductor (HT)Fleming's left-hand rule (HT)Motor effect: F = BIL (HT)DC motor construction and operation (HT)Motor components: split-ring commutator (HT)Electromagnetic induction (HT)Factors affecting induced EMF (HT)Alternators and AC generation (HT)Dynamos and DC generation (HT)Transformers: structure and function (HT)Transformer equation: Vp/Vs = Np/Ns (HT)Step-up and step-down transformers (HT)Transformer efficiency (HT)Microphones: pressure to current (HT)Loudspeakers: current to sound (HT)
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Start with Magnetic poles: north and south