Can't be answered. 12 Watts is a measure of power, not energy - so you have to say how long you want it for.
12 watts for 10 seconds would be a quite different answer than 12 watts for one hour.
Fossil fuel is ignited, the heat boils water, the expansion of the water as steam drives a turbine, the turbine drives an electric generator.
It is changed into electricity by a machine.It is used to heat water which, when changed into steam, powers the turbines, these then turn the generators to produce electricity
Energy is never lost, it is transformed into different types or transferred into different systems. Some of this is useful energy, for example thermal energy used to power a turbine or generator. Some of this thermal energy is not useful, and instead just heats up the fuel container or components of the generator. This energy has still come from the fossil fuel being burned, but it has not been transferred into the system for generating electricity.
They are hydrocarbons which burn with oxygen
http://www.green-planet-solar-energy.com/fossil-fuel-power.html
Electricity itself is not a fossil fuel but, can be generated by steam turbines and generators where the steam has been generated by heating water in fossil fuel boilers.
Sure, much of the world's electricity is obtained by burning fossil fuels.
Fossil fuels are burned to spin a generator which in turn produces electricity.
because it is the only fuel that gives electricity
To get electricity and fuel
Coal
Hydroelectric power is an alternative to production of electricity produced by fossil fuels
All fossil fuels (coal, oil and natural gas) are used to generate electricity.
Its a limited resource.
because it an fossil fuel
Sort of.Wind turbines generate electricity,wich is a fossil fuel.
Gasoline is because it is a product of oil, which is a fossil fuel. None of the others would qualify.