Fig. 1. (Color online) The graphical comparison of the measured Im, the calculated current Ir Ohm by Ohm’s law with the R=RrOhm, and the calculated current IR0 by Ohm’s law with the R=R0 in a tungsten filament electric bulb of 6 V−0.1 A with the room temperature resistance R0=7.9 Ω.
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