Electromagnetic coil
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An electromagnetic coil is an electrical conductor such as a wire in the shape of a coil. Electromagnetic coils are used in electrical engineering, in applications where electric currents interact with magnetic fields, in devices such as electric motors, generators, inductors, electromagnets, transformers, sensor coils such as in medical FMRi imaging devices with coils going upto 3-7 and even higher Tesla. Either an electric current is passed through the wire of the coil to generate a magnetic field, or conversely, an external time-varying magnetic field through the interior of the coil generates an EMF (voltage) in the conductor.
Field coil electromagnet on the stator of an AC universal motor.
Canon AF-10 Date old camera shutter driver coil.
Transformer
The sensor coil of a metal detector.
Wire
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A wire is a flexible, round, bar of metal.
Overhead power cabling. The conductor consists of seven strands of steel (centre, high tensile strength), surrounded by four outer layers of aluminium (high conductivity). Sample diameter 40 mm
Wire wrapped jewelry
Sophie Ryder's galvanised wire sculpture Sitting at the Yorkshire Sculpture Park
Coaxial cable, one example of a jacketed and insulated wire