The circuit diagram shows three cells with electromotive forces $3.0\,\text{V}$, $2.0\,\text{V}$ and $4.0\,\text{V}$ connected in series with a resistor of resistance $5.0\,\Omega$. The cells are assumed to have negligible internal resistance. What is the current $I$ in the circuit?
- A$0.20\,\text{A}$
- B$0.60\,\text{A}$
- C$1.0\,\text{A}$
- D$1.8\,\text{A}$