Mutual inductance
When one magnetic field generated by an electrical current interacts with another completely separate coil, this is known as mutual inductance. As the magnetic field cuts the second coil, an emf is induced in the second coil.
Questions on mutual inductance appear in the 2330-202, 2330-203, 2330-301 and the 2357-309 exams.
Example with a voltmeter
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Where would mutual inductance be used?
One of the most common uses is transformers, by altering the amount of windings on the second coil we can change the voltage that appears.