Home › NEET UG › Physics › Semiconductor Electronics: Materials, Devices and Simple Circuits › The release of electrons from a heated filament,…
The release of electrons from a heated filament, called the Edison effect, is:
ASecondary emission
BCold field emission
CPhotoelectric emission
DThermionic emission
Answer & Solution
Correct answer: D. Thermionic emission
Heat gives filament electrons enough energy to escape, which is thermionic emission.
Related questions
Besides powering devices, rectifiers can detect what?What does the p in p-type stand for?Why is n-type material so called?Why are field-effect transistors called unipolar?In a Schottky junction, what replaces the n-type semiconductor?In a varactor diode, reverse bias varies which property?Solar cells and LEDs are essentially built from what?A semiconductor diode is made of which arrangement?