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4.2.4 Resistance

Syllabus
0625–2026–2027
Topic
4.2.4
Level
—

4.2.4.1—Resistance: R = V/I

  • Recall/use resistance: R = V/I

4.2.4.2—An experiment to determine resistance

  • Describe an experiment to determine resistance using a voltmeter and an ammeter and do the appropriate calculations

4.2.4.3—State, qualitatively, the relationship

  • State, qualitatively, the relationship of the resistance of a metallic wire to its length and to its cross-sectional area

4.2.4.4—And explain the current–voltage graphs

  • Sketch and explain the current–voltage graphs for a resistor of constant resistance, a filament lamp and a diode

4.2.4.5—Following relationship for a metallic

  • Recall/use the following relationship for a metallic electrical conductor: (a) resistance is directly proportional to length (b) resistance is inversely proportional to cross-sectional area

Objective notes

5 learning objectives
ConceptIGCSE Physics