A student plots V-I graphs for three samples of nichrome wire with resistances $R_{1}, R_{2}$ and $R

Question

A student plots V-I graphs for three samples of nichrome wire with resistances $R_{1}, R_{2}$ and $R_{3}$. Choose from the following the statements that holds true for this graph.

Professor PC Thomas Classes · Answer

(d) : The inverse of the slope of $I-\mathrm{V}$ graph gives the resistance of the material. Here the slope of $R_{3}$ is highest. Thus, $R_{2}>R_{1}>R_{3}$.