A rechargeable battery and a hydrogen fuel cell have both stopped producing electricity. What must be done to each one so that it produces electricity again?
An external current is supplied to the battery and more fuel is supplied to the fuel cell
More fuel is supplied to the battery and an external current is supplied to the fuel cell
An external current is supplied to the battery and also to the fuel cell for the same time
More fuel is supplied to the battery and also to the fuel cell until each one is quite full
40 exam-style questions on AQA GCSE Chemistry 5.2 Chemical cells and fuel cells, covering 5.2.1 Cells and batteries, 5.2.2a Fuel cells, and 5.2.2b Half equations for hydrogen fuel cells. Each one has a worked solution and a mark scheme showing where the marks go.