What is thermionic emission?

Why does thermionic emission not take place in nonconductors?

Why does thermionic emission not take place in nonconductors?

Why does thermionic emission not take place in nonconductors?

What are the factors on which the rate of thermionic emission depends?

A : The process of photoelecton emission and thermionic emission of electrons is different . R : Photoelectric emission does not depend upon tempereature , whereas thermionic emission is temperature depandent .

Explain thermionic emission, field emission and photoelectric emission.

Which one is correct relation for thermionic emission