The $I-V$ graphs of two resistors, and their series combination, are shown below. Which one of these graphs represents the series combination of the other two? Give reasons for your answer.
The $I-V$ graphs of two resistors, and their series combination, are shown below. Which one of these graphs represents the series combination of the other two? Give reasons for your answer.
Draw a vertical line from any point on the $V$ axis such as to cut the graphs, $1,2$ and $3$ at points $P, Q$ and $R$ as shown in the graph below.
For the same potential, the current in each is different.
We find that $I _{1}< I _{2}< I _{3}$. This means that $R _{1}> R _{2}> R _{3}$
Hence, graph $1$ represents the series combination of other two resistors.
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