Electronics and Communication Engineering - Electronic Devices and Circuits - Discussion
Discussion Forum : Electronic Devices and Circuits - Section 1 (Q.No. 43)
43.
Work function of oxide coated cathode is much lower than that of tungsten cathode.
Answer: Option
Explanation:
Therefore emission current from oxide coated cathode is more.
Discussion:
4 comments Page 1 of 1.
Vikas said:
5 years ago
Thanks @Fatima.
Fatima noor said:
6 years ago
Oxide coated cathode emit electrons while tungsten cathode provides heat for this purpose. So the word function is more in the case of second one because heat provides more energy to emit the electrons.
(1)
Swathy said:
7 years ago
Can't understand the concept. Please explain clearly.
Swathy said:
7 years ago
Please explain the answer.
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