Question

For a cyclic process, the work done by the system is -500 J. The amount of heat gained by the system is 500 J. What is the change in the internal energy?

• A. 0 J
• B. 500 J
• C. -500 J
• D. 1000 J

Answer 1

The correct option is A 0 J

For cyclic process, internal energy change $\Delta U=0$ internal energy is a state function. Hence, in a cyclic process, where initial and final states are same, the initial and final internal energies are same.