Question

. A student carries out an experiment and plots the I-V

graphs of a sample of nichrome wire at three different

temperatures. Which of the following is true? 1

(a)T1 > T2 > T3 (b) T2 > T1 > T3

(c) T1 = T2 = T3 (d) T1 < T2 < T3​

Answer 1

Answer:

options d is correct answer

Answer 2

Explanation:

The question statement does not list the various V-I plots based on which the answer has to be made.

In general, a V-I graph can be used to calculate the resistance of a material at any given point. This derives its basics from Ohm's law.

Ohm’s principal discovery was that the amount of electric current through a metal conductor in a circuit is directly proportional to the voltage impressed across it, for any given temperature

V = I x R;