An electric motor carries a current of $2.0\,\text{A}$. In $5.0\,\text{s}$, it transfers $20\,\text{J}$ of energy. What is the potential difference (p.d.) across the motor?
- A$0.50\,\text{V}$
- B$2.0\,\text{V}$
- C$8.0\,\text{V}$
- D$50\,\text{V}$
Physics 5054 · O Level · Electromotive force and potential difference