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A student investigates four different electrical components - OCR Gateway - GCSE Physics - Question 7 - 2019 - Paper 3
Question 7
A student investigates four different electrical components. She plots current-potential difference graphs for the components. A Current 0 Potential difference B... show full transcript
Worked Solution & Example Answer:A student investigates four different electrical components - OCR Gateway - GCSE Physics - Question 7 - 2019 - Paper 3
Step 1
Which of the above shows the characteristic graph for a diode?
Answer
The characteristic graph of a diode is typically represented by option B.
In this graph, we can observe that the current increases sharply as the potential difference becomes positive, indicating forward bias.
In contrast, if the potential difference is negative, the current remains approximately zero, demonstrating that a diode only allows current to flow in one direction.
This behavior is consistent with the properties of a diode in a circuit, making option B the best representation.