A student compares two components. The table shows the charge passing through each component and the energy transferred.
| Component | Charge in C\mathrm{C}C | Energy in J\mathrm{J}J |
|---|---|---|
| P | 20 | 80 |
| Q | 30 | 90 |
Which statement correctly compares their potential differences?
P is 1.0 V1.0\ \mathrm{V}1.0 V less than Q.
P is 10 V10\ \mathrm{V}10 V greater than Q.
P is 1.0 V1.0\ \mathrm{V}1.0 V greater than Q.
P is 10 V10\ \mathrm{V}10 V less than Q.
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.