An example of mutual inductance is typically found in what type of device?

Mutual inductance is a phenomenon that occurs when the magnetic field created by a current in one coil induces a voltage in a nearby coil. This interaction is a fundamental principle underlying the operation of transformers. In a transformer, two or more inductive coils (windings) are magnetically coupled; as the alternating current flows through one coil, it generates a magnetic field that cuts through the second coil, inducing an electromotive force (EMF) in it. This property allows transformers to transfer electrical energy between circuits while also enabling voltage transformation.

The design of transformers maximizes this mutual inductance effect, allowing for efficient energy transfer and voltage conversion. The configuration typically involves primary and secondary coils wound around a common core, enhancing the coupling between the coils and improving performance.

In contrast, inductors primarily focus on self-inductance within a single coil rather than the interaction between multiple coils, while resistors and capacitors do not exhibit inductive properties in the same way and do not involve mutual inductance in their operation.