# The flux rule is the terminology that Feynman used to refer to the law relating magnetic flux to emf.

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The flux rule is the terminology that Feynman used to refer to the law relating magnetic flux to emf.

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Modern applications of Faraday’s law of induction :

• Electric generators and motors
• Dynamos in vehicles
• Transformers
• Induction furnaces (industrial), induction cooking stoves (domestic)
• Magnetic flow meters and energy meters
• Metal detectors at security checks
• Magnetic hard disk and tape, storage and retrieval
• Graphics tablets
• ATM Credit/debit cards, ATM and point-of-sale (POS) machines
• Pacemakers