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That means that there is a primary source of energy, and the secondary one is used incase the other fails.
secondary means you were there and saw the info primary mean you have heard it from somewhere else
In the larger categories, this is kinetic energy. If you mean in terms of fuel source, then that depends on whether it is battery powered or has an engine. It is has an engine, it burns petrochemicals to produce energy in the form of combustion and motion. If it has batteries and motors, then it is energy produced by converting chemicals to electricity, electricity to magnetism, and magnetism to motion.
Do you mean how, not why? Why is obviously to produce electricity.
That depends on what you mean by "this".
That means that there is a primary source of energy, and the secondary one is used incase the other fails.
secondary means you were there and saw the info primary mean you have heard it from somewhere else
Voltage -the rate at which energy is drawn from a source that produces a flow of electricity in a circuit; expressed in voltsCurrent - a flow of electricity through a conductor; "the current was measured in amperes"
it mean wat happens next
The energy source you mean must be coal, but you seem to have two questions mixed together
That depends a lot on what you mean by "this source".
Assuming you mean the source of energy, the original source of all energy for life on this planet is the sun.
Electricity generated from the energy in a falling column of water.
to create energy
The sun. Or if you mean more specifically, in some cases the heat radiation from the sun is used to superheat something (water, salt) and that is used to create electricity.
The energy scouce is odor.
In the larger categories, this is kinetic energy. If you mean in terms of fuel source, then that depends on whether it is battery powered or has an engine. It is has an engine, it burns petrochemicals to produce energy in the form of combustion and motion. If it has batteries and motors, then it is energy produced by converting chemicals to electricity, electricity to magnetism, and magnetism to motion.