a) Explain the terms: electro emission, surface barrier, and work function. b) What general condition must be satisfied before an electron can escape from the surface of a material? c) Why are valence electrons of a material so important?

a) Explain the terms: electro emission, surface barrier, and work function. b) What general condition must be satisfied before an electron can escape from the surface of a material? c) Why are valence electrons of a material so important?

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter3: Static Electricity

Section: Chapter Questions

Problem 3RQ: Why do static charges accumulate on insulator materials only?

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Q2.
a) Explain the terms: electro emission, surface barrier, and work function.
b) What general condition must be satisfied before an electron can escape from the
surface of a material?
c) Why are valence electrons of a material so important?
03.

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