Q. Which of the following does not vary with plate or grid voltages
A) $g_{m}$
B) $R_{p}$
C) $\mu$
D) Each of them varies
Explanation
The correct answer is Option D: Each of them varies.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.