BY Team Aakash Byjus
Energy is the capacity to do work. There are various forms of energy - heat, chemical, electrical, nuclear, etc.
Energy can neither be created nor be destroyed but it can be transformed from one form to another.
This means the total energy of an isolated object remains constant & is conserved over time.
If there is a loss of energy in one part of the universe, then in some other part, an equal amount of energy is gained.
There is no known example to violate the principle of the law of conservation of energy.
where 'Ut' and 'Ui' are total energy respectively. W is work done by or on the system. Q is the head added/removed from the system.
The amount of energy in the system is - Ut = Ui + W + Q.
A Microphone converts sound energy to electric energy, and thus it is an example of the law of conservation of energy.
The mechanical energy in a generator is converted into electrical energy.