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IB Physics SL B 5 12 Resistance and Resistivity Questions

Practise IB Physics SL B.5.12 by calculating resistance and resistivity, tracking length and cross-sectional area, and interpreting wire data and graphs.

Syllabus
First assessment 2025
Course
Physics SL
Level
SL

Exam points

  • Calculate resistance or resistivity from R=ρL/A, wire dimensions and data, with correct area conversions and Ω or Ω m units.
  • Compare resistance when length, radius/diameter, area or material changes, and interpret the associated graph trend or gradient.
  • Use material and temperature evidence to explain why a conductor’s resistivity and resistance change.

Learn this topic

Study B.5.12—Resistance and resistivity conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

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