Three V-I graphs are drawn individually for two resistors and their se

1.	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.
Answer» By Ohm’s Law V = IR ⇒ \(R =\frac{V}I\) = 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 R_eq = R₁ + R₂ + R_{3+ ………….+ 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.

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.

Answer»

By Ohm’s Law V = IR

⇒ \(R =\frac{V}I\) = 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

R_eq = R₁ + R₂ + R_{3+ ………….+ 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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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.

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