Semiconductor Physics Quiz

What is a semiconductor?

• An insulator

• A good conductor of electricity

• A material with resistivity between conductors and insulators

• A resistance material

Which of the following is a commonly used semiconductor?

• Copper

• Germanium

• Glass

• Carbon

What is the resistivity range of semiconductors?

• 1 to 10 ohm-m

• 0.5 to 1 ohm-m

• 0.1 to 0.5 ohm-m

• 10 to 0.5 ohm-m

What happens to the resistance of a semiconductor as temperature increases?

• It remains constant

• It becomes infinite

• It decreases

• It increases

What type of bond is formed in semiconductors?

• Metallic bond

• Ionic bond

• Hydrogen bond

• Co-valent bond

Which of the following elements is a tetravalent semiconductor?

• Gallium

• Arsenic

• Silicon

• Indium

What is the effect of adding a metallic impurity to a semiconductor?

• It decreases conductivity

• It increases conductivity

• It has no effect

• It turns it into an insulator

What is the primary characteristic of intrinsic semiconductors?

• They are pure and have minimal current conduction

• They are always p-type

• They have high conductivity

• They are always n-type

What is the role of holes in a semiconductor?

• They are missing electrons that create positive charge carriers

• They act as negative charges

• They are irrelevant to conductivity

• They increase resistance

What is the primary difference between n-type and p-type semiconductors?

• N-type has more holes, p-type has more electrons

• There is no difference

• N-type has more electrons, p-type has more holes

• N-type is always intrinsic, p-type is always extrinsic