This occurs when a changing current in a coil induces an opposing voltage in the same coil. This happens because the changing current generates a changing magnetic field, which induces an opposing voltage in the coil, as described by Lenz's law.
This occurs when a changing current in a coil induces an opposing voltage in the same coil. This happens because the changing current generates a changing magnetic field, which induces an opposing voltage in the coil, as described by Lenz's law.