Describe the nature of $P-V$ diagrams for isobaric and isochoric processes.
(N/A) In an isobaric process,the pressure $P$ remains constant. Therefore,the $P-V$ diagram is a straight line parallel to the volume axis ($V$-axis).
In an isochoric process,the volume $V$ remains constant. Therefore,the $P-V$ diagram is a straight line parallel to the pressure axis ($P$-axis).
In an isochoric process,the volume $V$ remains constant. Therefore,the $P-V$ diagram is a straight line parallel to the pressure axis ($P$-axis).
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