Question

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 as shown in the figure.
Interpret the graph by considering R1, R2 and R3 in proper order.

(ii) Why does the electrical resistivity of a given metallic wire depend on the nature of
the material?​

Answer 1

Ans 1 :-Since the slope of graph represent RESISTANCE. So you will see in the graph that the slope is greatest in R3 and decreases to R2 and then R1 .

Therefore R3>R2>R1

Ans2 :- YOUR SECOND ANSWER IS IN THE ATTACHMENT

Hope it helps ....

Answer 2

thats okay...

can you talk now???