Question

A car battery is charged by a $12\text{V}$ supply, and energy stored in it is $7.20\times {10}^5\text{J}$. The charge passed through the battery is

Answer 1

$\therefore \Delta U=\Delta Q\times V$

$\Rightarrow \Delta Q=\frac{\Delta U}{V}$

$=\frac{7.20\times {10}^5}{12}$

$=6.0\times {10}^4\text{C}$