A $13\,\Omega$ resistor is connected in series to a power supply whose electromotive force (e.m.f.) is $12\,\text{V}$ and whose internal resistance is $2.0\,\Omega$. What power is dissipated in the $13\,\Omega$ resistor?
- A$8.3\,\text{W}$
- B$9.6\,\text{W}$
- C$10\,\text{W}$
- D$11\,\text{W}$