Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • The current I and voltage V graphs for a given metallic wire at two different temperatures and <img alt="T_{

The current I and voltage V graphs for a given metallic wire at two different temperatures T_{1} and T_{2} are shown in the figure. It is concluded that:

Option: 1

T_1=T_2


Option: 2

T_1>T_2


Option: 3

T_1<T_2


Option: 4

None of the above


Answers (1)

best_answer

The slope of I vs V gives 1/R.

From the figure

The slope of 1> Slope of 2

\Rightarrow \frac{1}{R_1}>\frac{1}{R_2}\: \: or\: \: R_2>R_1

Resistance is higher at a high temperature.

Hence T_2>T_1

Posted by

Gunjita

View full answer

Similar Questions