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ScotlandEngineering ScienceQuick questions

Area 2: Electronics and control

Quick questions on Voltage divider, LDR and thermistor - SQA National 5 Engineering Science

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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Two equal 10 kΩ10 \text{ k}\Omega resistors form a divider across 5.0 V5.0 \text{ V}. Calculate the output across the lower resistor. [2 marks]
What is q2?
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State what happens to a thermistor's resistance as it gets hotter. [1 mark]
What is q3?
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A divider has R1=3.0 kΩR_1 = 3.0 \text{ k}\Omega (upper) and R2=1.0 kΩR_2 = 1.0 \text{ k}\Omega across 12 V12 \text{ V}. Find the output across R2R_2. [2 marks]

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