Free electron theory

What is the nature of collisions between free electrons in a metal?

• Non-colliding

• Partially elastic

• Elastic

• Inelastic

What is the movement of free electrons in a metal similar to?

• Liquid molecules

• Solid particles

• Plasma ions

• Gas molecules

What distribution of velocities do the electron velocities in a metal obey?

• Uniform distribution

• Maxwell-Boltzmann distribution

• Gaussian distribution

• Poisson distribution

What is the cause of electric conduction in a metal?

• Ions

• Free electrons

• Neutrons

• Protons

What happens to the free electrons when an electric field is applied to the metal?

• They move in opposite direction

• They stop moving

• They move randomly

• They move in the same direction

What is the nature of the potential field due to ions fixed in the lattice?

• Non-uniform

• Uniform

• Variable

• Zero

What is the mean kinetic energy of a free electron in a metal equal to?

• Twice of gas molecule KT

• Equal to gas molecule KT

• Half of gas molecule KT

• Zero

What is the movement of free electrons in a metal governed by?

• Classical kinetic theory of gases

• Newton's laws of motion

• Quantum mechanics

• Special relativity

What are the valence electrons of atoms in a metal free to do?

• Move in fixed orbits

• Move within the nucleus

• Move throughout the volume

• Move in a straight line

What is the composition of a solid metal at the atomic level?

• Only protons

• Only nucleus

• Nucleus and revolving electrons

• Only electrons