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Electric Current in Conductors — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsElectric Current in Conductors1 Mark
Question
The thermal energy developed in a current-carrying resistor is given by $U=i^2 R t$ and also by $U=$ Vit. Should we say that $U$ is proportional to $i^2$ or $i$ ?
✓

Answer

As the simplest form is $=\mathrm{i}^2 \mathrm{Rt}$
So, U is directly proportional to $\mathrm{i}^2$.

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