Q. In the presence of space charge in the diode valve the plate current is 10mA at the plate voltage 50V. Then the plate current at plate voltage 200 V will be
A) 20 mA
B) 40 mA
C) 80 mA
D) None of these
Explanation
(c) $I_{2} = I_{1}\left( \frac{V_{2}}{V_{1}} \right)^{3/2} = 10\left( \frac{200}{50} \right)^{3/2} = 80\ mA$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.