So if the rheostat is turned to zero resistance the fan gets the full 0.2A.<BR><BR>If you turn the rheostat knob to make it 20 ohms, the total circuit resistance will be 20 + 60 = 80 ohms, the current ...
As described above, potentiometers and rheostats are basically two approaches to the same problem. For both, the end result is the same, i.e. reducing voltage through a circuit. For a 120mm fan, you ...
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