Conductivity and Semiconductors Quiz

What is the primary characteristic of a conductor?

• It allows the flow of electrical current.

• It has a large band gap.

• It does not allow the flow of electrical current.

• It has intermediate conductivity.

What is the key feature of a conductor that allows it to conduct electricity?

• Large band gap

• High thermal energy

• Infinitesimally small energy difference between orbitals

• Presence of impurities

What is the term used to describe the gap in energy between bonding and antibonding orbitals?

• Molecular orbital

• Band gap

• Valence band

• Conduction band

Why do semiconductors conduct electricity better at higher temperatures?

• They become insulators at higher temperatures.

• They have fewer bonding orbitals at higher temperatures.

• They have a larger band gap at higher temperatures.

• More thermal energy promotes electrons into the conduction band.

Which of the following is an example of a semiconductor element?

• Diamond

• Silicon

• Copper

• Aluminum nitride

What happens when the band gap of a substance becomes sufficiently large?

• It becomes a superconductor.

• It becomes an insulator.

• It becomes a semiconductor.

• It becomes a conductor.

What is the process called when impurities are mixed into a semiconductor to increase its conductivity?

• Band gap reduction

• Doping

• Bonding

• Thermal excitation

What type of semiconductor is created when the dopant has more valence electrons than the substance?

• P-type

• Extrinsic

• N-type

• Intrinsic

What type of semiconductor is created when the dopant has fewer valence electrons than the substance?

• Extrinsic

• Intrinsic

• N-type

• P-type

Which electronic components utilize both p-type and n-type semiconductors?

• Inductors

• Diodes and transistors

• Capacitors

• Resistors