A small pump runs at two settings during a test. The total charge that passes through the pump during the test is 162 C.
| Setting | Current | Operating time |
|---|---|---|
| Low | 0.40 A | 3.0 min |
| High | 0.60 A | not recorded |
Calculate the operating time at the high setting.
94 exam-style questions on Edexcel GCSE Physics 10.1 Circuits, charge and current, covering 10.1.1 Structure of the atom, 10.1.2 Circuit diagrams and symbols, 10.1.3 Series and parallel circuits, 10.1.4 Potential difference and voltmeters, 10.1.5 Energy transferred, charge and potential difference, and 10.1.6 Current, ammeters and charge flow. Each one has a worked solution and a mark scheme showing where the marks go.