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