N-Type Semiconductors Quiz
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Questions and Answers

What type of semiconductor is formed when a pentavalent dopant is added to silicon?

  • Extrinsic semiconductor
  • n-type semiconductor (correct)
  • Intrinsic semiconductor
  • p-type semiconductor
  • What is the energy required to separate the extra electron from a pentavalent dopant in silicon at room temperature?

  • 1.1 eV
  • 0.01 eV
  • 0.72 eV
  • 0.05 eV (correct)
  • What is the valency of the dopant atom added to the silicon lattice?

  • 4
  • 2
  • 3
  • 5 (correct)
  • What is the name of the bulb-like structure at the termination of each neuron branch?

    <p>Synaptic knob</p> Signup and view all the answers

    What is the effect of temperature on the number of free electrons generated by silicon atoms?

    <p>Increases weakly</p> Signup and view all the answers

    Why is a pentavalent dopant known as a donor impurity in silicon?

    <p>Donates one extra electron for conduction</p> Signup and view all the answers

    What is the function of dendrites in a neuron?

    <p>Transmit impulses towards the cell body</p> Signup and view all the answers

    Which type of neuron has one axon and one dendrite?

    <p>Bipolar neuron</p> Signup and view all the answers

    What are the gaps between two adjacent myelin sheaths called?

    <p>Nodes of Ranvier</p> Signup and view all the answers

    Which type of nerve fibre is enveloped with Schwann cells but does not form a myelin sheath around the axon?

    <p>Unmyelinated nerve fibre</p> Signup and view all the answers

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