Electronic Devices Question 18
Question: In the CB mode of a transistor, when the collector voltage is changed by 0.5 volt. The collector current changes by 0.05 mA. The output resistance will be
[Pb. PMT 2003]
Options:
A) 10 kW
B) 20 kW
C) 5 kW
D) 2.5 kW
Show Answer
Answer:
Correct Answer: A
Solution:
Here $ \Delta V _{c}=0.5V $ , $ \Delta i _{c} $ =0.05mA = 0.05 x $10^{-3}$ A
Output resistance is given by
$ R _{out}=\frac{\Delta V _{c}}{\Delta i _{c}}=\frac{0.5}{0.05\times {{10}^{-3}}}=10^{4}\Omega $ = 10kW.
