Question

A cell is connected to 9 ohm resistors because of which heat of 400J is produced per second due to current flowing in it .
Obtain the potential difference applied across the resistors.

Answer 1

$$\begin{gathered} DearStudent. \\ Given, \\ R=9\Omega ,H=400J \\ Letthecurrentflowsforunittime.Wehave, \\ H=\frac{V^2}{R} \\ \Rightarrow \\ V=\sqrt{H\times R}=\sqrt{9\times 400}=\sqrt{3600}=\mathbf{60}\mathit{V} \\ \mathit{R}\mathit{e}\mathit{g}\mathit{a}\mathit{r}\mathit{d}\mathit{s}\mathbf{,}\mathbf{,} \end{gathered}$$