A tube tester is used to check a triode’s transconductance, which is the ratio of
A. a small change in cathode current to the corresponding small change in grid current
B. a small change in plate current to the corresponding small change in grid current
C. a small change in plate voltage to the corresponding small change in plate current
D. a small change in plate voltage to the corresponding small change in plate current
Show Answer
Answer: B
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