A-LevelPhysicsD.C. circuitsMay/June 2013Paper 1 Q381 Mark
In the circuit below, the reading Vₜ on the voltmeter changes from high to low as the temperature of the thermistor changes. The reading Vₗ on the voltmeter changes from high to low as the level of light on the light-dependent resistor (LDR) changes. [Figure showing a circuit with a thermistor, LDR, and two voltmeters Vₜ and Vₗ] The readings Vₜ and Vₗ are both high. What are the conditions of temperature and light level?
Alow
low
Blow
high
Chigh
low
Dhigh
high
✓ Correct Answer
The correct answer is C: high low
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
🔒
Unlock the Examiner's Analysis
Sign up for free to reveal the full examiner report, trap analysis, and mark scheme breakdown for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep