A student investigates how the current through a small filament bulb changes as the potential difference across it is varied.
The student uses these measurements to calculate the resistance of the bulb at each potential difference.
The results are shown in Table 1.
One value of resistance is missing from Table 1.
Calculate the missing resistance value.
Table 1
| Potential difference in V | Current in A | Resistance in Ω\OmegaΩ |
|---|---|---|
| 2.0 | 0.15 | 13 |
| 4.0 | 0.24 | 17 |
| 6.0 | 0.31 | 19 |
| 8.0 | 0.36 | |
| 10.0 | 0.40 | 25 |
| 12.0 | 0.43 | 28 |
59 exam-style questions on Edexcel GCSE Physics 10.2 Resistance. Each one has a worked solution and a mark scheme showing where the marks go.