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
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.
Using coal to generate electricity. (APEX)
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.
We generate electricity from other forms of energy. Such as wind, sun, ect...
The coal is used mostly to generate electricity.
waterfalls can generate hydro-electricity by the force of the water
They generate electricity produced by wind.
One way you can generate electricity from the sun is through a wind power plant.
Muscles can generate pressure. Using transducers, pressure can be converted into electricity.
solar power can generate electricity