A deep-sea oceanographic sensor is tethered to a marine research buoy. Due to cable transmission losses, the potential difference across the sensor's internal heating element is 36 V. The heating element dissipates energy at a constant rate of 5.4 W to prevent the internal electronics from freezing.
Calculate the electrical resistance of this heating element.
39 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.