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. Each one has a worked solution and a mark scheme showing where the marks go.