Question

A student carries .out an experiment and plots the V-I graph of three samples of nichrome wire with resistances RI, R2 and R3 respectively as shown in figure. Which of the following is true ? give reason a) r1=r2=r3 b)r1>r2>r3 c)r2>r1>r3 d)R3>r2>r1

Answer 1

Answer:

Using the relation [R=V/I] , which is inverse of the tangent of the given graph.

As tangent of first is greater than second which is further greater than third, the order of resistance will be R3>r2>r1

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