A rechargeable battery has an electromotive force (e.m.f.) of $6.0\,\text{V}$. What is meant by this?
- A$6.0\,\text{J}$ is the maximum energy the battery can provide in $1.0\,\text{s}$.
- B$6.0\,\text{J}$ is the total energy the battery can provide before it has to be recharged.
- C$6.0\,\text{J}$ of energy is provided by the battery to drive a charge of $1.0\,\text{C}$ around a complete circuit.
- D$6.0\,\text{J}$ of energy is provided by the battery to drive a current of $1.0\,\text{A}$ around a complete circuit.