Which thermodynamic process occurs at a constant volume, meaning no work is done by or on the system?

💡 Solution & Explanation

An isochoric process is a thermodynamic process in which the volume of the system remains constant, meaning the change in volume is zero and consequently no work is done by or on the system. In contrast, isobaric processes occur at constant pressure, while isothermal processes maintain constant temperature. According to the first law of thermodynamics, heat added during an isochoric process goes entirely into changing the internal energy of the system.