A student uses a data logger to measure the total charge that has passed through a lamp since it was switched on.
The current in the lamp is constant.
The Table shows the results.
Table
| Time in s\text{s}s | Total charge in C\text{C}C |
|---|---|
| 10 | 2.5 |
| 20 | 5.0 |
| 30 | 8.5 |
| 40 | 10.0 |
Identify the anomalous result.
Calculate the current in the lamp.
Use a result that is not anomalous.
Predict the total charge that has passed through the lamp after 60 s.
The lamp is connected to the data logger with metal wires.
Explain why the charge in the wires is carried by electrons and not by protons.
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.