If an emitter current is changed by 4mA, the collector current changes by 3.5mA. The value of b will be:

Option 1 - 0.5

Option 2 - 7

Option 3 - 3.5

Option 4 - 0.875

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Answered by

Alok Kumar Singh | Contributor-Level 10

6 months ago

Correct Option - 2

Detailed Solution:

$α = \frac{Δ l_{C}}{Δ l_{E}} = \frac{3.5}{4} = \frac{7}{8}$

$β = \frac{α}{1 - α} = \frac{7 / 8}{1 - 7 / 8} = 7$

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