Measurements of hydrogen‐plasma resistivity were made under conditions where the dominant loss mechanism was electron‐neutral collisions. Three‐inch‐diameter tubes with electrode spacings ranging from 2–22 in. were used. Measurements were made at 15 and 22 kA, 56‐&mgr;sec pulse duration, and pressures of 0.5, 1.0, and 5.0 Torr. Electron‐density and temperature measurements were obtained from Stark‐broadening and line‐intensity‐ratio techniques. The predicted resistivity was calculated from electron‐proton and electron‐neutral collisions and compared with the absolute resistivity calculated from the voltage‐current measurements. The gas‐temperature rise was determined from the resistance difference obtained from the two calculations. The energy expended in gas heating was determined to be 2.4%–4.2% of the input energy.