1. Select the best answer (Q/N 1-10): 1. A pn junction is formed by 3. a) the recombination of electrons and holes (b) i

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1 Select The Best Answer Q N 1 10 1 A Pn Junction Is Formed By 3 A The Recombination Of Electrons And Holes B I 1 (66.11 KiB) Viewed 39 times

1. Select the best answer (Q/N 1-10): 1. A pn junction is formed by 3. a) the recombination of electrons and holes (b) ionization of-a-p-type-and-an-n-type-material 2. The depletion region is created by (a) ionization (b) diffusion (c) recombination (d) answers (a), (b), and (c) Holes in an n-type semiconductor are (a) minority carriers that are thermally produced (b) minority carriers that are produced by doping (c) majority carriers that are thermally produced (d) majority carriers that are produced by doping The majority carriers in an n-type semiconductor are 4. (a) holes (b) valence electrons (c) conduction electrons (d) protons The purpose of a pentavalent impurity is to 5. (c) the boundary (d) the collision of a proton and a neutron 8. (a) reduce the conductivity of silicon (b) increase the number of holes (c) increase the number of free electron(d) create minority carriers 6. Recombination is when (a) an electron falls into a hole (b) a positive and a negative ion bond together (c) a valence electron becomes a conduction electron (d) a crystal is formed 7. Electron-hole pairs are produced by a) recombination (b) thermal energy (c) ionization (d) doping Each atom in a silicon crystal has (a) four valence electrons (b) four conduction electrons (c) eight valence electrons, four of its own and four shared (d) no valence electrons because all are shared with other atoms 9. The energy band in which free electrons exist is the (a) first band (b) second band (c) conduction band d) valence band 10. An atom consists of (a) one nucleus and only one electron (b) one nucleus and one or more electrons (c) protons, electrons, and neutrons (d) answers (b) and (c)