Under a cyclic path, internal energy after the complete cycle is the same as:
Correct answer: C. Initial internal energy
- A. 2*Initial
- B. Initial heat
- C. Initial internal energy
- D. Initial work
Explanation
According to the first law of thermodynamics, the internal energy of a system is conserved. This means that the internal energy of a system will be the same at the end of a complete cycle as it was initially, at the beginning of the cycle.
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About First Law of Thermodynamics
The first law relates heat supplied, work done and the change in internal energy through energy conservation. Problems use sign conventions and apply the law to isothermal, adiabatic, isobaric and isochoric processes. Internal energy is a state function, while heat and work depend on the path followed.
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