To record a flow-volume loop with a volume displacement spirometer,which of the following is required? A) Potentiometer B) Kymograph C) CO₂ absorber D) He analyzer

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A potentiometer is required in a volume displacement spirometer to measure the volume of air inhaled and exhaled by converting the mechanical movement into an electrical signal, which can then be recorded and analyzed.

To Record a Flow-Volume Loop with a Volume Displacement Spirometer,which