Are those coils of wires in an electric fan magnetic?
coils of wires always are magnetic (if there flows current trough them). the only use of such a coils besides as a magnet would be to deminish fluctuations, like in the fat piece of long usb cables. Else, its always magnetic
Electric motors, all electric motors, have some form of stator and some form of rotor. The rotor is the section that rotates... duh. The stator is the part that houses the rotor and does not move. AC electric motors, like your fan motors, take advantage of the fact that the phases of current alternate through the wraped wires around both the stator and the rotor. The wire wrappings make the rotor and stator into electro magnets. By careful placement of the rotor and stator wires, the magnetic fluxes that surround both parts can be made to alternately pull and push on the rotor. And that causes the rotor to turn. While most if not all commercial motors have wire wrapped rotors and stators so they are electro magnets, some lab motors may have permanent magnets embedded in their rotors in lieu of the wrapped wires. These are way cheaper, but they are typically way weaker than comparable motors with electro magnetic rotors. So, yes, the coils are electro magnets. As long as there is current alternating through them, there will be corresponding magnetic fields and appropriate forces to turn the rotors.
