Classical Free Electron Theory Quiz

What is the definition of electrical conductivity?

• The ability of a material to conduct heat

• The ability of a material to repel an electric current

• Inability of a material to conduct an electric current

• Ability of a material to conduct an electric current

Explain the relationship between electrical conductivity and resistivity in metals.

• As the electrical conductivity increases, the resistivity increases

• As the electrical conductivity increases, the resistivity decreases

• Metals with high electrical conductivity also have high resistivity

• There is no relationship between electrical conductivity and resistivity in metals

What is the role of free electrons in the conductivity of metals?

• They are responsible for the high electrical conductivity of metals.

• They have no role in the conductivity of metals

• They decrease the electrical conductivity of metals

• They are responsible for the magnetic properties of metals

How does temperature affect the conductivity of metals?

• Conductivity becomes non-existent

• Conductivity remains the same

• Conductivity decreases

• Conductivity increases

Discuss the factors that affect the conductivity of metals.

• Color, weight, and density

• Magnetic field, pressure, and volume

• Atomic number, atomic mass, and electronegativity

• Temperature, impurities, crystal structure, and electron mobility

Explain the concept of electron mobility in the context of metal conductivity.

• Electron mobility is the measure of how quickly and easily electrons can move through a metal when an electric field is applied.

• Electron mobility refers to the ability of electrons to change their charge when moving through a metal.

• Electron mobility has no impact on metal conductivity.

• Electron mobility is the measure of how quickly and easily protons can move through a metal when an electric field is applied.

What is the difference between conductors and insulators in terms of their electron behavior?

• Conductors and insulators both allow the flow of electrons.

• Conductors allow the flow of protons, while insulators do not allow the flow of electrons.

• Conductors do not allow the flow of electrons, while insulators allow the flow of electrons.

• Conductors allow the flow of electrons, while insulators do not allow the flow of electrons.

Discuss the impact of impurities on the conductivity of metals.

• Impurities can increase the conductivity of metals.

• Impurities have no impact on the conductivity of metals.

• Impurities can change the color of metals.

• Impurities can decrease the conductivity of metals.

Explain the concept of band theory and its relation to metal conductivity.

• Band theory explains the behavior of neutrons in solids and their relation to metal conductivity.

• Band theory explains the behavior of protons in solids and their relation to metal conductivity.

• Band theory explains the behavior of electrons in solids and their relation to metal conductivity.

• Band theory explains the behavior of photons in solids and their relation to metal conductivity.

How does the crystal structure of metals influence their conductivity?

• The crystal structure of metals only affects their color, not their conductivity.

• The crystal structure of metals has no impact on their conductivity.

• Metals with different crystal structures have the same conductivity.

• The crystal structure of metals affects the movement of free electrons within the metal lattice.