A student connects one branch to a 6.0 V supply and measures the total current from the supply. The student then connects a second complete branch in parallel with the first and measures the total current again. The supply is not changed.
| Number of branches connected | Total current from the supply in A |
|---|---|
| 1 | 0.30 |
| 2 | 0.45 |
Explain what happens to the total resistance when the second branch is connected. Use the readings in the table in your answer.
94 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.