A battery has a rating of $9.0\,\text{V}$. What is implied by this?
- AEach coulomb of charge from the battery supplies $9.0\,\text{J}$ of electrical energy to the whole circuit.
- BThe battery supplies $9.0\,\text{J}$ of electrical energy to an external circuit for each coulomb of charge.
- CThe potential difference across any component connected to the battery will be $9.0\,\text{V}$.
- DThere will always be a potential difference of $9.0\,\text{V}$ across the battery terminals.