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The voltage V and current I v graphs for...

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

A

`T_(1) gt T_(2)`

B

`T_(1) lt T_(2)`

C

`T_(1) = T_(2)`

D

`T_(1)=(1)/(T_(2))`

Text Solution

Verified by Experts

The correct Answer is:
A
The slope of V-I graph gives the resistance fo a conductor at a given temperature. From the graph, it follows that resistance of a conductor at temperature `T_(1)` is greater than at temperature `T_(2)`. As the resistance of a conductor is more at higher temperature and less at lower temperature, hence `T_(1) gt T_(2)`
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Knowledge Check

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

    A
    `T_(1) gt T_(2)`
    B
    `T_(1) ~~ T_(2)`
    C
    `T_(1) = T_(2)`
    D
    `T_(1) lt T_(2)`

  • The current voltage graph for a given metallic wire at two different temperatures T_(1) and T_(2) are shown in figure. Which is true

    A
    `T_(1)=T_(2)`
    B
    `T_(1)gtT_(2)`
    C
    `T_(1)ltT_(2)`
    D
    None of these

  • The V - i graph for a conductor at temperature T_(1) and T_(2) are as shown in the figure. ( T_(2) - T_(1)) is proportional to

    A
    `cot 2 theta`
    B
    `sin theta`
    C
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    D
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