Conduction involves the transfer of electric charge or thermal energy, light waves, protons, neutrons.

Conduction involves the transfer of electric charge or thermal energy

Explanation:

Conduction is the mode of transfer of thermal energy when two bodies are in direct contact with each other. The thermal energy is transferred by the collision of particles with one another. Example: Transfer of heat from burner to a cooking pan.

Conduction is also the ability of the substance to allow the passage of electric charge through them. The passage of electric current is due to the presence of mobile electrons or the presence of ions. Example: Sodium is a conductor due to presence of free electrons.

a and b sometimes have a positive value

pretty sure it's false