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Electric circuits

Pearson Edexcel 9PH0 — matched to your course.

Charge flow, emf, internal resistance, resistivity and circuit laws.

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Calibrating a thermistor thermostat

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Subtopics and study areas

  • Calibrate a thermistor in a potential-divider circuit and relate output potential difference to temperature.
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Determining the resistivity of a wire

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Subtopics and study areas

  • Measure resistance, length and cross-sectional area and use ρ = RA/L.
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Electric circuits

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Subtopics and study areas

  • Apply Kirchhoff's laws and circuit equations.
  • Distinguish emf from terminal potential difference.
  • Use resistivity and potential-divider relationships.
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EMF and internal resistance

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Subtopics and study areas

  • Vary current and use terminal potential difference data to determine cell emf and internal resistance.
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