Physics - Current Electricity Question with Solution | TestHub

Rearranged circuit between A \& B is :

(due to symmetry) Total resistance of circuit $=\frac{7}{3}+\frac{2}{3}=3\Omega \cdot i=\frac{9}{3}=3\mathrm{A}$ Heat produced in cell $={\mathrm{I}}^2\mathrm{r}=(3{)}^2\times \left(\frac{2}{3}\right)=6\mathrm{W}$ Current in resistance connected directly between $\begin{array}{rlr}& A\text{ and }B=\frac{7}{15}\times 3=\frac{7}{5}=1.4\mathrm{A}& =\frac{7}{15}\times 3=\frac{7}{5}=1.4\mathrm{A}\end{array}$ Heat produced in cell