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A Level OCR Physics (AS/Year1) > Chapter 9.6 - Diodes > Flashcards

Chapter 9.6 - Diodes Flashcards

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1
Q

What is a diode

A

Semiconductor component that allows current only in one particular direction

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2
Q

What is a light-emitting diode (LED)

A

Diode that emits light when it conducts electricity

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3
Q

What is the I-V characteristic for a diode (or LED)

A

• Potential difference across diode is not directly proportional to current in diode

• Diode doesnt obey Ohm’s law
-non-ohmic conductor

  • Resistance is not constant
  • Behaviour is dependent on polarity
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A Level OCR Physics (AS/Year1) (66 decks)

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