2. Solved Papers
  3. Punjab Medical

Punjab Medical Punjab - MET Solved Paper-2008

  • question_answer
    In a transistor circuit the base current changes from \[30\mu A\] to\[90\mu A\]. If the current gain of the transistor is 30, the change in the collector current is

    A) \[4\,\,mA\]                        

    B) \[2\,\,mA\]

    C) \[3.6\,\,mA\]                    

    D) \[1.8\,\,mA\]

    Correct Answer: D

    Solution :

    \[\beta =\frac{\Delta {{i}_{C}}}{\Delta {{i}_{B}}}\] \[\therefore \]  \[30=\frac{\Delta {{i}_{C}}}{90-30}\]             \[\Delta {{i}_{C}}=30\times 60\]                     \[=1800\mu A=1.8\,\,mA\]


You need to login to perform this action.
You will be redirected in 3 sec spinner