Three V-I graphs are drawn individually for two resistors and their series combination. out of A, B, C which one represents the graph for series combination of the other two? Give reason for your answer.


By Ohm’s Law

= slope of V-I graph


Therefore, the slope of the V-I graph represents the effective resistance.


Now in series combination of the resistance all the resistances get summed up


+ ………….+ Rn.


Therefore, the series combination will have the maximum resistance than the other resistors.


Hence the line with maximum slope (line C) will give the series combination of the other two resistors.


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