Current I I\,I leaves junction P and enters junction Q. The currents at the junctions are shown in the table.
| Junction | Currents entering | Currents leaving |
|---|---|---|
| P | 0.68 A | 0.23 A and III |
| Q | I I\,I and 0.18 A | 0.24 A and JJJ |
Calculate the value of current JJJ.
81 exam-style questions on Edexcel GCSE Physics 10.2 Resistance, covering 10.2.1 Current in a circuit and conservation at junctions, 10.2.2 Resistance and variable resistors, 10.2.3 Series and parallel resistance, 10.2.4 I–V characteristics of components, and 10.2.5 LDRs and thermistors. Each one has a worked solution and a mark scheme showing where the marks go.