CIRCLE TRUE OR FALSE (1 point each) 1. (T/F) Thermal voltage for a semiconductor

Question

CIRCLE TRUE OR FALSE (1 point each) 1. (T/F) Thermal voltage for a semiconductor diode depends on temperature (in Kelvin degrees), Boltzmann's Constant, and the forward bias of the diode. 2. (T/F) An extrinsic semiconductor does not have any doping to change the conductivity of the material. 3. (T/F) A semiconductor diode has only two states; either forward biased or reversed biased. 4. (T/F) At room temperature, thermal voltage for silicon is approximately 26 milliamps. 5. (T/F) A depletion region in a semiconductor diode is a region composed of mainly free charge carriers. 6. (T/F) A semiconductor diode is formed by a p-n junction. 7. (T/F) A Zener diode must be forward biased in order to perform and operate as a Zener diode. 8. (T/F) A "hole" is the empty space where an electron was but the space has still has effective mass and electrical charge. 9. (T/F) A reversed biased semiconductor diode is, ideally, a short circuit. 10.(T/F) A "p region" in a semiconductor diode is a region where an excess of positive charges are available for conduction.

Explanation / Answer

1. thermal voltage is given by VT = KT/q and it doesnt depend on forward bias of diode tehrfore false.

2. False, an extrinsic semiconductor is made by doping an intrinsic semiconductor

3. False semiconductor diode can be without any biasing

4. true

5. false the depletion region is consist of immobile charges

6. A pn junction is known as diode

7. false zener diode is used in reverse biased

8. True

9. in reverse biased ideally the diode is open circuit

10. true

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