Semiconductor Smarts: Intrinsic u0026 Extrinsic Essentials Quiz Quiz

1. Definition of Intrinsic Semiconductor

   Which statement best describes an intrinsic semiconductor?

   1. A pure semiconductor material without any added impurities
   2. A conductor made purely from metals
   3. A semiconductor that has only negative charge carriers
   4. A mixture of two metals
   5. A semiconductor containing foreign atoms intentionally

2. Common Intrinsic Semiconductor Materials

   Which of the following is a commonly used intrinsic semiconductor material?

   1. Copper
   2. Silicon
   3. Plastic
   4. Carbon Fiber
   5. Gallum

3. Definition of Extrinsic Semiconductor

   What distinguishes an extrinsic semiconductor from an intrinsic one?

   1. It is always a liquid at room temperature
   2. It contains added impurities to change its electrical properties
   3. It is made from organic materials
   4. It does not conduct electricity at all
   5. It is an alloy of silicon and aluminum

4. Types of Extrinsic Semiconductors

   Which are the two main types of extrinsic semiconductors?

   1. Positive and negative types
   2. Heavy and light types
   3. N-type and P-type
   4. Type-A and Type-B
   5. Neutral and charged types

5. N-type Semiconductor Example

   If phosphorus is added to silicon, which type of extrinsic semiconductor is formed?

   1. N-type
   2. P-type
   3. Q-type
   4. M-type
   5. D-type

6. Major Carriers in N-type

   In an N-type semiconductor, what acts as the majority charge carrier?

   1. Holes
   2. Positrons
   3. Electrons
   4. Neutrons
   5. Protons

7. Major Carriers in P-type

   Identify the majority charge carriers present in a P-type semiconductor.

   1. Electrons
   2. Protons
   3. Holes
   4. Neutrons
   5. Ions

8. Dopant for N-type Silicon

   Which of the following elements can be added as a dopant to pure silicon to create an N-type semiconductor?

   1. Boron
   2. Phosphorus
   3. Gold
   4. Sulfur
   5. Oxygen

9. Effect of Doping on Conductivity

   How does doping generally affect the electrical conductivity of a semiconductor?

   1. It decreases conductivity
   2. It has no effect on conductivity
   3. It increases conductivity
   4. It turns the semiconductor into an insulator
   5. It creates magnetic properties only

10. Purpose of Doping

    Why is doping done in the manufacturing of semiconductors used in electronic devices?

    1. To make them heavier
    2. To increase their transparency
    3. To control the number and type of charge carriers
    4. To improve their taste
    5. To make them waterproof