Teach: The simple circuit
Aims text Considerations You'll need to borrow some acid, zinc and copper from your chemistry department for the simple cell, they call it a Voltaic cell and add a salt bridge. I'm not sure what that does, never was much good at chemistry. I think the inside of the PhET battery simulation sums it up nicely. What happens inside the battery is chemistry, for all we care it could be fairies. Don't tell the chemistry...