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Home ‣ Electronics ‣ Semiconductor Principles Comments
  • Question

  • The first transistor was invented in 1938.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • False 

    • Semiconductor Principles problems

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    • 1. The number of electrons in the outer shell of carbon, germanium, and silicon is 5.

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    • A. True
    • B. False
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    • 2. When a depletion region of a transistor is large the barrier voltage is also large.

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    • A. True
    • B. False
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    • 3. When a voltage is placed across a semiconductor, free electrons move toward the negative voltage.

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    • A. True
    • B. False
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    • 4. The first integrated circuit was invented in 1959.

    • Options
    • A. True
    • B. False
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    • 5. The natural elements carbon, germanium, and silicon are semiconductors.

    • Options
    • A. True
    • B. False
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    • 6. A covalent bond is when atoms lose valence shell electrons.

    • Options
    • A. True
    • B. False
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    • 7. Germanium is the most widely used semiconductor material because of its stability at high temperatures.

    • Options
    • A. True
    • B. False
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    • 8. The n-type semiconductor material is doped by adding material with electron holes.

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    • A. True
    • B. False
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    • 9. The P-N junction is a barrier to electron flow.

    • Options
    • A. True
    • B. False
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    • 10. The forward voltage drop for a germanium transistor is 0.7 V and for a silicon transistor is 0.3 V.

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    • A. True
    • B. False
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