Question

In a cyclic process, the amount of heat given to a system is equal to

• A. net increase in internal energy
• B. net work done by the system
• C. net decrease in internal energy
• D. net change in volume
• E. net change in pressure

Answer 1

The correct option is B net work done by the system

In a cyclic process, the system starts and returns to the same thermodynamic state.

Thus, change in internal energy in a cyclic process $\Delta U=0$

From !st law of thermodynamics, $\Delta Q=\Delta U+\Delta W$

$⟹\Delta Q=0+\Delta W=\Delta W$
Hence option B is correct.