An experimental high-altitude atmospheric probe utilizes a primary 12.6 V lithium-polymer battery pack connected in a series circuit to power two main payloads: a piezoelectric pressure sensor and a specialized heating element.
At a high altitude, telemetry indicates that the potential difference across the heating element is 7.85 V.
State the potential difference across the piezoelectric pressure sensor.
32 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.