Problem 1: Circle either true or false (1 point each) 1. (True False) In pure si
ID: 3349143 • Letter: P
Question
Problem 1: Circle either true or false (1 point each) 1. (True False) In pure silicon, atoms are held in place by covalent bonds. 2. (True False) In semiconductors, n-doping means an abundance of free negative charges. 3. (True False) At room temperature, thermal energy causes some covalent bonds to break, and thusly generating free electrons and holes that become available for current conduction. 4. (True False) The basic semiconductor construction for a semiconductor diode is a p-n junction. 5. (True False) Intrinsic silicon has no "doping" of p or n type atoms. 6. (True False) A semiconductor diode has only two states, forward biased or reversed biased. 7. (True False) A full-wave power supply circuit must have more than one diode in order to conduct a full 360 degrees of input waveform. 8. (True False) A Zener diode must be forward 9. (True False) The depletion region for a p-n junction has no free charges available for conduction. 10. (Tru has mass and electric charge". biased in order to perform the Zener's task. e False) A "hole" in our semiconductor context is the "space where an electron was thatExplanation / Answer
1. True. Because Si has 4 valence elctrons to have ionic bond it has to loose or gaine 4 electrons, so covalent bond exists in pure Si.
2. True. In semiconductors N-type doping gives free electrons per atom doped hence it will give free negetive charges.
3.true. At absulute zero temperature semiconductors act as insulators and at room temperature thermal energy gives number of free elctrons for conduction. This happens because electrons gain thermal energy and break bonds
4.true. Keeping P and N type materials together form a PN junction diode.
5.true. Intrensic material is pure silicon hence it is not having any impuriteis.
6.true. Diode is forward biased when positive terminal is connected to P-type and negetive terminal of the battery is connected to N-Type.
7.True. Beacuse one diode conducts only for one cycle either positive or negetive half cycle.
8.Flase. Zener diode must be reverse biased to maintain constant voltage drop across it, application of zener diode is Voltage regulator
9. True. Depletion region is area where no charge carrirs are present.
10.true. Hole is absence of an electron