A student measures the current in a component and the time for which it flows in four tests.
Table
| Test | Current (A) | Time (s) |
|---|---|---|
| P | 0.50 | 120 |
| Q | 2.0 | 25 |
| R | 0.20 | 300 |
| S | 1.6 | 40 |
Which test has the largest charge flow?
Test Q, with a charge flow of 50 C50\ \text{C}50 C
Test R, with a charge flow of 60 C60\ \text{C}60 C
Test S, with a charge flow of 64 C64\ \text{C}64 C
Test P, with a charge flow of 240 C240\ \text{C}240 C
43 exam-style questions on OCR GCSE Physics 3.1 Static and charge, covering 3.1.1 Positive and negative charge, 3.1.2 Static electricity and forces between charged objects, 3.1.3 Electron transfer and static electricity, 3.1.4 Electric fields, 3.1.5 Current as a flow of charge, 3.1.6 Current in a single closed loop, and 3.1.7 Charge, current and time. Each one has a worked solution and a mark scheme showing where the marks go.