Question

Both q and w are ______ function and $q+w$ is a ______ function.

• A. state, state
• B. state, path
• C. path, state
• D. path, path

Answer 1

Answer: (C)

path, state

Answer $C:$Path, state.

The change in energy of a system is equal to the difference between the heat added to the system and the work done by the system.

$△E=Q-W$ ($W$ is $-ve$, if work done on system)

$Q$ and $W$ are path dependent, but $△E$ depends only on the state of the system and not how the system got to that state.