Interactive practical

Current–potential difference characteristics

Put a resistor, a filament lamp and a diode in turn into a circuit with a reversing switch, read the ammeter and voltmeter in both directions, and compare the three I–V graphs.

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Practice: Investigating current–potential difference characteristics

OCR J260 — this practical matches your selected course; the questions check the method, data handling and practical skills.

Check your answers as you work. For written questions, use the marking points to assess your response.

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6 additional questions require GCSE Physics Premium access.

2 of 2 available questions match the selected filters. This session contains 2 questions.

Question 1 · 1 mark · Foundation · Practical · Diagnostic

Which graph describes a fixed resistor at constant temperature?

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Question 2 · 3 marks · Standard · Practical · Practical method

Explain why the current–potential difference graph for a filament lamp is curved.