The current-voltage graph for a given metallic conductor at two different temperature `T_(1) and T_(2)` are as shown in the figure. Then

Options

A. `T_1 lt T_(2)`
B. nothing can be said about `T_(1) and T_(2)`
C. `T_(1)=T_(2)`
D. `T_(1) gt T_(2)`

Answer

A

Explanation

From the figure, it is clear that for the same potential difference current through the conductor at temperature `T_(1)` is more than that at the temperature `T_(2)`.
`therefore` Also, we know that the resistance of a conductor increases with temperature.
Therefore, `T_(2) gt T_(1)`.