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CUET UG Semiconductor Electronics — practice questions — page 2

Explore 40 free Semiconductor Electronics questions in CUET UG Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Semiconductor Electronics questions and exercises with answers

Showing questions 31–40 of 40.

A pentavalent impurity is known as a:Read the answer and worked solution →In an n-type semiconductor, the majority carriers are:Read the answer and worked solution →A junction diode is described as a device with how many electrodes?Read the answer and worked solution →Holes exist as vacant levels created in the:Read the answer and worked solution →Conductivity of an intrinsic semiconductor depends on its:Read the answer and worked solution →A material with a band gap above three electron volts is an:Read the answer and worked solution →A material behaves as a metal when the two bands:Read the answer and worked solution →In an n-type semiconductor, the minority carriers are:Read the answer and worked solution →In a p-type semiconductor, the majority carriers are:Read the answer and worked solution →The band holding the valence electrons is called the:Read the answer and worked solution →

Worked practice questions

A pentavalent impurity is known as a:

  1. Donor
  2. Carrier
  3. Barrier
  4. Blocker
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Correct answer: A. Donor

1. It contributes one extra electron to the crystal. 2. That electron is available for conduction. 3. So the pentavalent impurity is a donor. 4. The answer is donor. _Source: syllabus Physics, Ch 14 'Semiconductor Electronics'_

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In an n-type semiconductor, the majority carriers are:

  1. Protons
  2. Neutrons
  3. Electrons
  4. The holes
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Correct answer: C. Electrons

1. Donor atoms release spare electrons into the crystal. 2. These greatly outnumber the thermally made holes. 3. So electrons are the majority carriers. 4. The answer is electrons. _Source: syllabus Physics, Ch 14 'Semiconductor Electronics'_

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A junction diode is described as a device with how many electrodes?

  1. Six
  2. Ten
  3. Two
  4. One
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Correct answer: C. Two

1. A diode is the simplest junction device. 2. It has one terminal on each side of the junction. 3. So it is a two electrode device. 4. The answer is two. _Source: syllabus Physics, Ch 14 'Semiconductor Electronics'_

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