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Consists of 2 coils of wire linked by an iron core. These are used to step up (increase) and step down (decrease) AC voltages.No electrical connection exists between the coils. Energy is transferred between the coils by the magnetic field in the core.

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1. Consists of 2 coils of wire linked by an iron core. These are used to step up (increase) and step down (decrease) AC voltages.
No electrical connection exists between the coils. Energy is transferred between the coils by the magnetic field in the core.





 
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