Question
A constant current i is passed through a resistor. Taking the temperature coefficient of resistance into account, indicate which of the plots shown in figure best represents the rate of production of thermal energy in the resistor.
✓
Answer
Explanation:
$\text{U}_{\text{AB}}=\text{a}_{\text{AB}}\theta+\frac{1}{2}\text{b}_{\text{AB}}\theta^2$
$\text{q}\times\text{t}$
$\text{dq}\times\text{dt}$
$Þ \ \frac{\text{du}_{\text{AB}}}{\text{du}}\propto\text{a}_{\text{AB}+\text{b}_{\text{AB}}}\text{t}$
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