The voltage V and current I graphs for a conductor at two different tempratures `T_(1)` and `T_(2)` are shown in the figure .The relation between `T_(1)` and `T_(2)` is

Options

A. `T_(1)gtT_(2)`
B. `T_(1)ltT_(2)`
C. `T_(1)=T_(2)`
D. `T_(1)=(1)/(T_(2))`

Answer

A

Explanation

The slope of V-I graph gives the resistance of a conductor at a given temprature.
From the graph,it follows that resistance of a conductor at temperature `T_(1)` is greater than at temprature `T_(2)`.As the resistance of a conductor is more at higher temprature and less at lower temprature,hence `T_(1)gtT_(2)`