Q
The cathdde voltage drop, in a mercury arc rectifier, is due to_____________?
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A
A. Expenditure of energy in ionization
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B
B. Surface resistance
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C
C. Expenditure of energy in overcoming the electrostatic field
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D
D. Expenditure of energy in liberating electrons from the mercury
Correct Answer:
D. D. Expenditure of energy in liberating electrons from the mercury