Question

Higher filament currents can lead to higher tube currents despite the fact that the two currents are not the same thing. Which one of the statements below best describes the relationship between filament current and tube current?

a.	The filament current heats the filament which in turn causes it to thermionically emit electrons, the hotter it gets, the more it emits and thus the more tube current you can have.
b.	The filament current is always positive, and the tube current is equal to it in absolute value, but negative, and thus technically different.
c.	The tube current is always exactly one third the filament current because of the high-voltage transformer.
d.	The tube current is always exactly three times the filament current, because of the high-voltage transformer.

Answer 1

(The filament current heats the Silememt uokich in trn cas it ho thermionlcallg emit electron s 、the aySY 0 でr