Question
State the first law of thermodynamics.
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Answer
The first law of thermodynamics is based on the principle of conservation of energy and can be stated in different ways as follows :
- Energy can neither be created nor destroyed, however, it may be converted from one form into another.
- Whenever, a quantity of one kind of energy is consumed or disappears, an equivalent amount of another kind of energy appears.
- The total mass and energy of an isolated system remain constant, although there may be interconservation of energy from one form to another.
- The total energy of the universe remains constant.
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