
1) Electric transformer
Found on
https://www.crosswordclues.com/clue/magnet-wire

Magnet wire or enameled wire is a copper or aluminium wire coated with a very thin layer of insulation. It is used in the construction of transformers, inductors, motors, speakers, hard disk head actuators, potentiometers, electromagnets, and other applications which require tight coils of wire. The wire itself is most often fully annealed, electr...
Found on
http://en.wikipedia.org/wiki/Magnet_wire

The kind of wire always used in making electromagnets, alternators, generators and motors. Uses very thin enamel insulation to minimize thickness and maximize resistance to heat.
Found on
https://www.encyclo.co.uk/local/21463
No exact match found.