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CP6: Internal Resistance of a Cell

Determine the EMF and internal resistance of a cell by measuring terminal p.d. and current

Required PracticalEdexcelA-Level

🔬 Equipment Required

  • Cell or battery
  • Variable resistor (rheostat)
  • Ammeter
  • Voltmeter
  • Connecting wires
  • Switch

🦺 Safety Precautions

  • Do not short circuit the cell
  • Use low currents to prevent heating
  • Monitor cell temperature
  • Disconnect when not taking readings

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About CP6: Internal Resistance of a Cell

CP6: Internal Resistance of a Cell is a required practical for Edexcel A-Level Physics. This practical determine the emf and internal resistance of a cell by measuring terminal p.d. and current

Students are expected to understand the method, identify and control variables, use appropriate equipment, analyse results, draw graphs, identify sources of error, suggest improvements, and consider safety precautions.

Questions on required practicals frequently appear in Edexcel A-Level Physics exams and can be worth significant marks. Practice with our AI-generated questions to master this practical.

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