RRB/SSC JE Electrical 2019 || Basic Electronics Quiz 1

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Question 1

The band gap of Silicon at room temperature is:

• A1.3 eV
• B0.7 eV
• C1.1 eV
• D1.4 eV

Question 2

In an n-type silicon crystal at room temperature, which of the following can have a concentration of 4 × 10¹⁹ cm^-3?

• ASilicon atoms
• BHoles
• CDopant atoms
• DValence electrons

Question 3

The intrinsic carrier concentration of silicon sample of 300 K is If after doping, the number of majority carriers is the minority carrier concentration is

• A
• B
• C
• D

Question 4

n–type silicon is obtained by doping silicon with

• AGermanium
• BAlumnium
• CBoron
• DPhosphorus

Question 5

Which of the following represents space –charge neutrality?

• Ap₀ + n₀ = 0
• Bp₀ + n₀ = 1
• Cp₀ + N_a^- = n₀ + N_d⁺
• Dp₀ + N_d⁺ = n₀ + N_a^-

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