Plugs are just connectors they don't generate
motorcycles use a magnet system to generate electricity for the spark plugs they cannot run without electricity because you need electricity to ignite the gasoline but they can run with no battery if you have a kickstart or you can bump start them
the island generate electricity from sae water
Using coal to generate electricity. (APEX)
On things like cars you usually have a belt driven alternator to provide electricity to the ignition and all electric functions. But if you have something simpler, like a chain saw or a small outboard engine, then you can have magnets in/on the flywheel that pass by coils to generate electricity for the spark plugs. And that's a magneto ignition system.
An ac motor cannot generate electricity but its shaft can be coupled to that of certain devices like an alternator to in order to generate electricity.
Generate
We generate electricity from other forms of energy. Such as wind, sun, ect...
waterfalls can generate hydro-electricity by the force of the water
The coal is used mostly to generate electricity.
They generate electricity produced by wind.
Muscles can generate pressure. Using transducers, pressure can be converted into electricity.
One way you can generate electricity from the sun is through a wind power plant.