In the above example , if the system moves from Bto A, what is the Change in internal energy ?A. 300 JB. `-300 J`C. 400 JD. `-400 J`

In the above example , if the system moves from Bto A, what is the Cha

1.	In the above example , if the system moves from Bto A, what is the Change in internal energy ?A. 300 JB. `-300 J`C. 400 JD. `-400 J`
Answer» Correct Answer - B Consider a closed path that through the state A and B . Internal energy is a state function , So `DeltaU` is zero for a closed path. Thus, `DeltaU=DeltaU_(AB)+DeltaU_(BA)=0` or `DeltaU_(BA)=-DeltaU_(AB)=-300J`

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In the above example , if the system moves from Bto A, what is the Change in internal energy ?A. 300 JB. `-300 J`C. 400 JD. `-400 J`

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