Photodiode Quiz

8 Questions

Settings
Please wait...
Electric Current Quizzes & Trivia

How well do you know photodiodes? �


Questions and Answers
  • 1. 
    When a photon of sufficient energy strikes the diode, it excites an electron, thereby creating a free electron. What is this phenomenon called?
    • A. 

      Peltier Effect

    • B. 

      Photoelectric Effect

    • C. 

      Seebeck Effect

  • 2. 
    By definition, N-type semiconductor has an excess of  _______ compared to the P-type region, which has an excess of ______ compared to the N-type region.
    • A. 

      Electrons, holes

    • B. 

      Holes, electrons

  • 3. 
    When a diode is reverse biased, the width of the depletion layer __________, causing the capacitance to _________. 
    • A. 

      Increases, increase

    • B. 

      Increases, decrease

    • C. 

      Decreases, increase

    • D. 

      Decreases, decrease

  • 4. 
    • A. 

      Proportional, exponentially, proportional

    • B. 

      Proportional, logarithmically, inversely proportional

    • C. 

      Inversely proportional, exponentially, unrelated

  • 5. 
    Dark current is
    • A. 

      Produced by forward biasing the photodiode

    • B. 

      Produced by the random generation of electrons and holes in the depletion region

    • C. 

      Produced by incident photons generating electrons and holes in the depletion region

  • 6. 
    • A. 

      True

    • B. 

      False

  • 7. 
    When the p–n junction is forward biased,
    • A. 

      The electric charge remains the same as the junction barrier is not affected

    • B. 

      The electric charge flow is restricted due to the increased junction barrier

    • C. 

      The electric charge flows freely due to the decreased junction barrier

  • 8. 
    If a diode is reverse biased, the voltage at the anode is higher than at the cathode.
    • A. 

      True

    • B. 

      False