A $12\,\text{V}$ battery is connected to a source of electromotive force (e.m.f.) and left to charge for $20$ minutes. In this period, the battery receives $7.2 \times 10^4\,\text{J}$ of energy. What quantity of charge flows through the battery?
- A$5.0\,\text{C}$
- B$60\,\text{C}$
- C$100\,\text{C}$
- D$6000\,\text{C}$