BRAINCAKESensor Circuits - Temperature
A sensor circuit produces an output p.d. that changes as a result of a physical variable such as temperature or light intensity.
A potential divider consists of two or more resistors in series and a source of fixed potential difference.
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Key terms in this lesson
- Potential difference
- The energy transferred per unit charge as charge moves between two points in a circuit.
- Thermistor
- A component whose resistance decreases markedly as its temperature increases, because more charge carriers become available.
More in Direct Current Circuits
- Power
- Measuring Internal Resistance
- Cells in Series
- Cells In Parallel
- Diodes in Circuits
- The Potential Divider - Fixed p.d.
- The Potential Divider - Variable p.d.
- Sensor Circuits - Light
All 15 lessons in Direct Current Circuits · All AQA AS-level Physics topics