Question

. The temperature of a conductor is increased. The graph best showing the variation of its resistance is


.

Answer 1

Explanation:

In conductors average relaxation time decreases with increase in temperature resulting in increase in resistivity

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Answer 2

When the temperature of a conductor is increased. The Straight line graph will show the best variation of its resistance.

Explanation :

• we know the relation between resistance and temperature for the conductor, For the conductor we have resistance is directly proportional to the temperature.

                                         R  ∝ T

                       Or

                                         R = KT

                             (   Where K is constant   )

• Compare the equation with the general equation of the straight line which is,

                                       y = mx +c

So as by relation we see when we increase the temperature, the resistance will increase and there is a linear relationship between resistance and temperature. So we conclude that the R - T graph between them will be the straight line.