You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard X

Physics

Ohmic and Non Ohmic Resistors

I - V graph f...

Question

$I - V$ graph for a metallic wire at two different temperatures, $T_{1}$ and $T_{2}$ is a shown in the figure.
Which of the two temperature is lower and why?

Open in App

Solution

Slope of a V-I graph gives value of $1 / R$ , as we can see that the slope of graph 1 is greater than graph 2 ,so
$1 / R_{1} > 1 / R_{2}$
or $R_{2} > R_{1}$
we know that the resistance of metals increases with increase in temperature therefore
$T_{2} > T_{1}$
it means $T_{1}$ is lower because $R_{1}$ is smaller .

Suggest Corrections

Similar questions

Q. I-V graph for a mettallic wire at two different temperatures,

T_{1}

and

T_{2}

is as shown in the figure.

Which of the two temperature is lower and why?

Q. V-I graph for a metallic wire at two different temperatures

T_{1}

and

T_{2}

. Which of the two temperature

T_{1}

and

T_{2}

is higher and why?

The current-voltage graph for a given metallic wire at two different temperatures $T_{1}$ and $T_{2}$ is shown in the figure. The temperature $T_{1}$ and $T_{2}$ are related as:

Q. The current I and voltage V graphs for a given metallic wire at two different temperatures

T_{1}

and

T_{2}

are shown in figure.It is concluded that

Q. The current voltage (I – V) graphs for a given metallic wire at two different temperatures

T_{1}

and

T_{2}

are shown in figure. If follows from the graphs that

Join BYJU'S Learning Program

I−V graph for a metallic wire at two different temperatures, T1 and T2 is a shown in the figure.Which of the two temperature is lower and why?

Slope of a V-I graph gives value of 1/R , as we can see that the slope of graph 1 is greater than graph 2 ,so 1/R1>1/R2or R2>R1we know that the resistance of metals increases with increase in temperature therefore T2>T1it means T1 is lower because R1 is smaller .

$I - V$ graph for a metallic wire at two different temperatures, $T_{1}$ and $T_{2}$ is a shown in the figure.
Which of the two temperature is lower and why?