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CAIE IGCSE Physics 4.2.4.4 And Explain the Current Voltage Graphs Questions

Practise sketching and identifying I–V graphs for an ohmic resistor, filament lamp and diode, then explain each shape through resistance or conduction.

Syllabus
2026–2028
Course
Physics 0625

Exam points

  • Identify a constant-resistance conductor from a straight I–V line through the origin, explain a filament lamp flattening curve as heating increases resistance, and identify a diode from negligible reverse current and forward threshold.

CAIE IGCSE Physics 4.2.4.4 And Explain the Current Voltage Graphs Questions question 1

[Maximum number: 3]

On Fig. 6.1, sketch the current-voltage graph of a filament lamp and explain its shape.

Fig. 6.1

Fig. 6.1

explanation

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