Iron - Magnetically soft, Steel - Magnetically hard, Alternating current - Type of current made by a generator, Direct current - Type of current made by a dynamo, Electric motor - Uses current and magnetic field to generate a force, Generator - Uses force and magnetic field to generate a current, Split ring commutator - Swap the direction of current each half turn, Slip rings - Allows electrical contact to be made without tangles of wires, Force - Thumb stands for (in FLemings LHR), Magnetic Field - First finger stands for (in FLemings LHR), Current - Second finger stands for (in FLemings LHR), Loudspeaker - Uses the motor effect, Microphone - Uses the generator effect, Solenoid - Many coils of wire,

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