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P4 physics (Transformers (Step down and step up transformers (step down…
P4 physics
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Motors
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The split ring commutator is a way of splitting the contacts to keep it spinning in the same direction
Loudspeakers
A loudspeaker contains a coil of wires which is surrounded by a magnet, another inside the coil
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The interaction between the magnetic field and the current causes the coil to move in one direction and the AC then causes it to move in the other direction this causes the cone to vibrate this creates the sound waves
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