Physics - Current Electricity Question with Solution | TestHub

Given $\mathrm{V}=4.2$ volt
$\therefore$ Energy supplied by battery
$=\mathrm{vq}=4.2\times 5800\times 3600\times 10^{-3}\mathrm{J}=87.696\mathrm{kJ}$
$\therefore$ Energy stored in the battery when fully charged
$=87.696\mathrm{kJ}\approx 87.7\mathrm{kJ}$