Electronic Devices Question 208

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 $ .



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