An electrically heated panel contains two conducting tracks, P and Q. The tracks are connected to a 12 V supply, but the connections are hidden.
Measurements from the circuit are shown in the table.
| Measurement location | Current in A | Potential difference across track in V |
|---|---|---|
| Supply cable before the tracks | 5.0 | — |
| Track P | 2.0 | 12 |
| Track Q | 3.0 | 12 |
| Supply cable after the tracks | 5.0 | — |
Describe how the measurements show that tracks P and Q are connected in parallel.
Track P breaks. Describe what happens to track Q and explain why.
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.