A student measures the power transferred to a resistor for different currents.
The resistance of the resistor stays constant.
The Table shows the results.
Table
| Current in A\text{A}A | Power in W\text{W}W |
|---|---|
| 0.50 | 1.5 |
| 1.0 | 6.0 |
| 1.5 | 13.5 |
| 2.0 | 24.0 |
Describe the relationship between power and current shown in the Table.
Determine the resistance of the resistor.
Calculate the potential difference across the resistor when the current is 1.5 A.
Predict the power transferred to the resistor when the current is 3.0 A.
105 exam-style questions on Edexcel GCSE Physics 10.3 Electrical energy and power, covering 10.3.1 The heating effect of an electric current, 10.3.2 Reducing energy transfer in wires, 10.3.3 Advantages and disadvantages of the heating effect, 10.3.4 Energy transferred by an electrical circuit, 10.3.5 Electrical power, and 10.3.6 Energy transfers in domestic devices. Each one has a worked solution and a mark scheme showing where the marks go.