A resistor is connected to a battery. A second resistor of the same resistance is then added in series. What happens to the current in the battery?
It halves, because the total resistance of the circuit doubles
It halves, because the potential difference of the battery halves
It doubles, because the total resistance of the circuit halves
It is unchanged, because the battery has not been changed
38 exam-style questions on AQA GCSE Physics 2.2 Series and parallel circuits, covering 2.2 Series and parallel circuits. Each one has a worked solution and a mark scheme showing where the marks go.