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Edexcel A-Level Physics AS 2.4.70 I V Graphs for Circuit Components Questions

Practise Edexcel A-Level Physics I-V graphs for circuit components using diode, thermistor, filament lamp and ohmic-conductor curves.

Syllabus
Pearson Edexcel International Advanced Subsidiary/Advanced Level
Course
Physics XPH11/YPH11
Level
AS

Exam points

  • identify components from I-V curves for diodes, thermistors, lamps and ohmic conductors
  • explain filament-lamp and thermistor graph shapes using temperature and conduction electrons
  • read threshold potential difference from LED I-V data when conduction begins

Edexcel A-Level Physics AS 2.4.70 I V Graphs for Circuit Components Questions question 1

[Maximum number: 1]

The current-potential difference (p.d.) graph for a diode is shown.

Figure for Question Edexcel A-Level Physics AS 2.4.70 I V Graphs for Circuit Components Questions question 1 — Edexcel A-Level Physics AS

Which of the following statements is correct for this diode?

A

This diode does not conduct in the reverse direction.

B

The resistance of this diode in the reverse direction is infinite.

C

The resistance of this diode decreases when the p.d. is above 0.7 V .

D

This diode does not conduct when the p.d. is below 0.7 V .

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