The diagram illustrates the layout of a water wheel that turns a generator to generate electrical energy. The water has a flow rate of $200\ \text{kg s}^{-1}$. The generator delivers a current of $32\ \text{A}$ at a voltage of $230\ \text{V}$. If any change in the water’s kinetic energy is ignored, what is the efficiency of the system?
- A$14\%$
- B$16\%$
- C$22\%$
- D$47\%$