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4. A student carries out an experiment and plots the V-I graph of three samples of nichrome wire with resistances R1, R2 and R3 respectively (Figure). Which of the following is true?
(a) R1 = R2 = R3 ​(b) R1 > R2 > R3
​(c) R3 > R2 > R1 ​(d) R2 > R3 > R1

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Solution

Dear Student
Q4 Resistance=V/IResistance will be given by slope of the graph between V and I graph.as R3 will be maximum than R2 than R1 as slopes decreases from R3>R2>R1REGARDS

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