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The current-voltage graphs for a given metallic wire at two di

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Solving time: 3 mins

The current-voltage graphs for a given metallic wire at two different temperatures $T_{1}$ and $T_{2}$ are shown in the figure. The temperature $T_{2}$ is greater than $T_{1} .$ Is this statement true or false?

Name: Video solution 1: The current-voltage graphs for a given metallic wire at two different temperatures T1 and T2 are shown in the figure. The temperature T2 is greater than T1. Is this statement true or false?
Uploaded: 2023-03-20T00:40:17.000Z
Duration: 8 min
Description: Video solution 1: The current-voltage graphs for a given metallic wire at two different temperatures T1 and T2 are shown in the figure. The temperature T2 is greater than T1. Is this statement true or false?

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Updated on: Mar 20, 2023

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Electricity and Magnetism (DC Pandey)

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Charlotte Discussed

The current-voltage graphs for a given metallic wire at two different temperatures

T_{1}

and

T_{2}

are shown in the figure. The temperature

T_{2}

is greater than

T_{1} .

Is this statement true or false?

8 mins ago

Discuss this question LIVE

8 mins ago

Text solutionVerified

Solution

\frac{I}{V} =

Slope of given graph

= \frac{1}{R}

R = \frac{1}{Sl o p e}

\Rightarrow (Sl o p e)_{T_{2}} < (Sl o p e)_{T_{1}}

\Rightarrow \frac{1}{( Sl o p e ) _{T_{2}}} > \frac{1}{( Sl o p e ) _{T_{1}}}

Resistance of a metallic wire increases with increase in temperature.
or

R_{T_{2}} > R_{T_{1}}

T_{2} > T_{1}

Therefore, the statement is true.

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Question Text	The current-voltage graphs for a given metallic wire at two different temperatures $T_{1}$ and $T_{2}$ are shown in the figure. The temperature $T_{2}$ is greater than $T_{1} .$ Is this statement true or false?
Updated On	Mar 20, 2023
Topic	Current Electricity
Subject	Physics
Class	Class 12
Answer Type	Text solution:1 Video solution: 2
Upvotes	395
Avg. Video Duration	6 min

The current-voltage graphs for a given metallic wire at two different temperatures $T_{1}$ and $T_{2}$ are shown in the figure. The temperature $T_{2}$ is greater than $T_{1} .$ Is this statement true or false?

Text solutionVerified

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