An electronic sensor operates for two periods, one straight after the other. The total charge that flows through the sensor during the two periods is 28.2 C.
| Operating period | Current | Time |
|---|---|---|
| First | 180 mA | 1.5 minutes |
| Second | not measured | 2.5 minutes |
Calculate the current in the sensor during the second operating period.
82 exam-style questions on AQA GCSE Physics 2.1 Current, potential difference and resistance, covering 2.1.1 Standard circuit diagram symbols, 2.1.2 Electrical charge and current, 2.1.3 Current, resistance and potential difference, and 2.1.4 Resistors. Each one has a worked solution and a mark scheme showing where the marks go.