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Northern IrelandTechnology and DesignQuick questions

AS 1 Electronic and Microelectronic Systems

Quick questions on Input subsystems and sensors: LDR, thermistor and the potential divider - CCEA A-Level Technology and Design

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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State how the resistance of an NTC thermistor changes as it gets hotter. [1 mark]
What is q2?
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A divider has a 2 kilohm fixed resistor in series with a 6 kilohm sensor across 8 V, output across the sensor. Find the output voltage. [2 marks]
What is q3?
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How would you wire an LDR divider so the output voltage is high in bright light? [2 marks]

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