Change in heat at constant volume is the measure of:
Correct answer: A. internal energy
- A. internal energy
- B. Work
- C. Enthalpy
- D. All of the above
Explanation
When we talk about the change in heat at constant volume, we are actually measuring the internal energy of the system. Heat is a form of energy, and when it is added or removed from a system without any change in volume, it directly affects the internal energy of the system. So, the change in heat at constant volume is a measure of the internal energy.
This question appeared on the KMU Centralized Admission Test 2020 paper, which you can sit online with every answer explained.
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About Internal Energy
Internal energy is the total microscopic kinetic and potential energy of a system and is a state function. The first law, ΔU = q + w, connects changes in internal energy with heat and work, including sign conventions, expansion or compression and constant-volume processes.
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