in Electronic Devices edited by
53 views
0 votes
0 votes

The current $i_b$ through the base of a silicon $npn$ transistor is $1+0.1\cos(10000\pi t)\:mA$. At $300\:K$, the $r_\pi$ in the small signal model of the transistor is

  1. $250\:\Omega$
  2. $27.5\:\Omega$
  3. $25\:\Omega$
  4. $22.5\:\Omega$
in Electronic Devices edited by
15.8k points
53 views

Please log in or register to answer this question.

Welcome to GO Electronics, where you can ask questions and receive answers from other members of the community.