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The current-voltage graphs for a given m...

The current-voltage graphs for a given metallic at two difference temperatures `T_(1) &T_(2)` are shown in figure. The temperature. `T_(2)` is greater than temperature `T_(1)`. State whether statement is true or false. Given reason.

Text Solution

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The given statemenet is true. It is deal from the figure that the resistance of metallic wire is larger at temperature `T_(2)` then at temperature, `T_(1)` So it implies that `T_(2) gt T_(1)`.
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Knowledge Check

  • The following graph represent the pressure versus number density for ideal gas at two different temperatures T_(1) and T_(2) . The graph implies

    A
    `T_(1)=T_(2)`
    B
    `T_(1) gt T_(2)`
    C
    `T_(1) lt T_(2)`
    D
    Cannot be determined

  • The resistance R_(o) and R_(t) of a metallic wire at temperature 0^(@)C and t^(@)C are related as ( alpha is the temperature co-efficient of resistance).

    A
    `R_(t)=R_(o)(1+alpha t)`
    B
    `R_(t)=R_(o)(1-alpha t)`
    C
    `R_(t)=R_(o)(1+alpha t)^(2)`
    D
    `R_(t)=R_(o)(1-alpha t)^(2)`

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