Question

For a common emitter transistor configuration the ratio of `I_c/I_E` = 0.96, then the current gain in this configuration is ______.

Options

• 6

• 12

• 24

• 48

Answer 1

For a common emitter transistor configuration the ratio of `I_c/I_E` = 0.96, then the current gain in this configuration is 24.

Explanation:

Given: α = `I_C/I_epsilon` = 0.96

Current gain (β) = `alpha/(1 - alpha)`

∴ β = `0.96/(1 - 0.96)`

= 24

β = `(Delta I_c)/(Delta I_B)`

= `alpha/(1 - alpha)`

= `0.96/0.04`

= 24