Semiconducting Devices Question 286
Question: When plate voltage in diode valve is increased from 100 volt to 150 volt then plate current increases from 7.5 mA to 12 mA. The dynamic plastic resistance will be
[RPMT 2000]
Options:
A) 10 kW
B) 11 kW
C) 15 kW
D) 11.1 kW
Show Answer
Answer:
Correct Answer: D
Solution:
$ r _{p}=\frac{\Delta V _{p}}{\Delta i _{p}}=\frac{150-100}{(12-7.5)\times {{10}^{-3}}}=\frac{50}{4.5}\times 10^{3}=11.1k\Omega $ .
