d) Diode/LED/LDR
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4 Terms
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state the I-V characteristics of a diode/LED with a positive current and potential difference
current → not directly proportional to the potential difference
non-ohmic conductor
resistance = decreasing
2
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state the I-V characteristics of a diode/LED with a negative current and potential difference
potential difference → not directly proportional to the current
non-ohmic conductor
resistance → infinite
3
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state the relationship between light intensity and resistance for an LDR
inversely proportional
4
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describe why the relationship between the light intensity and resistance for an LDR is inversely proportional
light intensity increases → number density of electrons increases
Flashcards (46)