In an n-p-n transistor in CE configuration when `V_(BE)` is increased by small amount, then

Options

A. `I_(B)` increases and `I_(C)` increases proportionately
B. `I_(B)` increases and `I_(C)` remains constant
C. `I_(B)` remains constant and `I_(C)` increases
D. Both `I_(B)` and `I_(C)` remain nearly constant

Answer

A

Explanation

For an n-p-n transistor in CE configuration, if `V_(BE)` is increased by a small amount, both hole current from the emitter region and the electron current from the base region will increase. As a consequence both `I_(B)` and `I_(C)` will increase proportionty. This shows that when `I_(B)` increases `I_(C)` also increases. The plot of `I_(C)` versus `V_(CE)` for different fixed values of `I_(B)` gives one output characteristic. So, there will be different output characteristics corresponding to different values of `I_(B)`.