The random motion of holes and free electrons due to thermal agitation is called_________

The random motion of holes and free electrons due to thermal agitation is called_________

Right Answer is:

Diffusion

SOLUTION

The random motion of holes and free electrons due to thermal agitation is called diffusion.

Detailed Explanation

⇒ If you spray some perfume in one corner of your room you immediately feel its effect from other corners because of ‘flow’ due to the concentration gradient.

⇒ This is applicable for electrons and holes in a semiconductor also. They move from the region of higher concentration to the region of lower concentration.

⇒ In the same way, the holes and free electrons diffuse throughout a semiconductor.

⇒ This movement by diffusion is a random movement and is due to the energy of the electrons.

The drive which causes diffusion is the thermal agitation of the atoms or molecules or electrons and holes. Hence, this is why thermal agitation is called diffusion.

Scroll to Top