In a cyclic process, what is the net change in internal energy of the system?

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Question: In a cyclic process, what is the net change in internal energy of the system?

Options:

Correct Answer: Zero

Solution:

In a cyclic process, the system returns to its initial state, so the net change in internal energy is zero.

In a cyclic process, what is the net change in internal energy of the system?

In a cyclic process, what is the net change in internal energy of the system?

Step 1: Understand what a cyclic process is. A cyclic process is when a system goes through a series of changes and eventually returns to its starting point.
Step 2: Recognize that internal energy is a property of the system that depends on its state.
Step 3: Since the system returns to its initial state in a cyclic process, all properties, including internal energy, are the same as they were at the beginning.
Step 4: Conclude that because the initial and final states are the same, the net change in internal energy is zero.

Cyclic Process – A thermodynamic process where the system undergoes a series of changes and returns to its original state.
Internal Energy – The total energy contained within a system, which depends on the state of the system.
First Law of Thermodynamics – Energy cannot be created or destroyed, only transformed; in a cyclic process, the change in internal energy is zero.