Question

the voltage current variation of two metallic wires A and B at constant temperature as shown in figure reviewing that the two wires have the same length and same diameter explain which of the two wires will have larger resistivity​

Answer 1

We have V=IR.

Comparing with y=mx, I=(1/R)V.

Thus the slope is 1/R, and greater the slope of the line, smaller is the resistance.

Since $R=\frac{\rho l}{A}$

resistivity is directly proportional to resistance.

Now, as wire B has less slope, it has more resistance than A.

Answer: B has more resistivity than A

Answer 2

Answer:

as we know

we have V =R

compareing with

y=mx,l=(1/R)V

thus the slope is 1/R and greater than the slope of the line and resistance is smaller

since R=rowl/A

resistivity is directly proportional to the resistance

Now ,as wire B has less slope so it has more resistance than A

I hope it will be helpfull for you dear