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Question
Two V-I graphs A and B for series and parallel combinations of two resistors are as shown. Giving reason state which graph shows (a) series, (b) parallel combination of the resistors.
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Solution
We know that V = IR or `1/"R"=1/"V"=` slope of graph given.
The resistance increases as the slope decreases. Graph B clearly has a greater slope than graph A. As a result, B has less resistance than A. As far as we are aware, combined series resistance is consistently greater than combined parallel resistance. As a result, A and B are series and parallel combinations, respectively.
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