Why is inductive coupling applicable to transformers rather than conductive coupling?

A standard transformer uses inductive coupling. For example, take a two-winding single-phase transformer. Current in the first winding develops a magnetic field in the core. The magnetic field then "induces" a current in the second winding.



Inductive coupling uses a magneticfield to transfer energy between two coils.



Conductive coupling uses a direct connection to transfer energy using electron flow. Electrons transfer from one coil to the other. This type of connection is also called a galvanic connection.



An autotransformer uses both inductive and conductive coupling.

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