A student carries out an experiment and plots the V-I graph of three samples of Nicrome wire with resistance R1,R2 and R3 respectively. Which ofeth following is true?
A
R1=R2=R3
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B
R1>R2>R3
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C
R3>R2>R1
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D
R2>R3>R1
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Solution
The correct option is AR3>R2>R1 Slope of I-V graph =1R=tanθ. Slope is less for R3, so option three is correct.