For the working substance of a heat engine that completes one full cycle

PHYSICS · Single correct · A Level · Physics · Engineering physics · Engineering physics

Problem

For the working substance of a heat engine that completes one full cycle, the net change in entropy

\Delta S_{\text{sys}}

is: (a)

\displaystyle \Delta S_{\text{sys}} = \frac{Q_h}{T_h}-\frac{Q_c}{T_c}

(b) positive (c) zero (d) dependent on the path followed during the cycle