An ideal gas undergoes a cyclic transformation starting from the point A and coming back to the same point by tracing the path A→B→C→A as shown in the diagram. The total work done in the process is ______ J.
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Solution
Work done is given by area enclosed in the PvsV cyclic graph or V vs P cyclic graph.
Sign of work is positive for clockwise cyclic process for V vs P graph.
$$
\begin{aligned}
& \mathrm{W}=\frac{1}{2} \times(30-10) \times(30-10)=200 \mathrm{kPa}-\mathrm{dm}^3 \\
& =200 \times 1000 \mathrm{~Pa}-\mathrm{L}=2 \mathrm{~L}-\text { bar }=200 \mathrm{~J}
\end{aligned}
$$
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An ideal gas undergoes a cyclic transformation starting from the point A and coming back to the same point by tracing the path A→B→C→A as shown in the diagram. The total work done in the process is ______ J. 