Question

The voltage current graph of a metallic conductor at two different temperatures T1 and T2 as shown below. At which temperature is the resistance higher?​

Answer 1

Answer:

The mathematical expression for Ohm's law is:

V=IR

Thus, graph between V versus I gives a straight line with slope R.

Since, slope at T

2

is more than slope at T

1

.

For metallic conductors, resistance is directly proportional to temperature. Thus, resistance is higher at T 2