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    If one plots a graph of length (m) on the y-axis against the square root of resistance R, what would be the best units for R? Should it be dimensionless (root R), same as before (root R /Ohms) or corrected (root R/(root Ohms))?
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    It depends on the question, if you're finding gradiant you could just write m/root R or mR^-1
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    What would be the best units for root R on the graph? On the label for the x-axis, or in calculation of gradient, it makes no difference at all to my question.
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    Ohms, only way to get other units would be to use Ohm's law.
 
 
 
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