The correct relation between α (ratio of collector current to emitter current) and β (ratio of collector current to base current) of a transistor is :
The correct relation between α (ratio of collector current to emitter current) and β (ratio of collector current to base current) of a transistor is :
Option 1 -
β = 1/(1-α)
Option 2 -
α = β/(1+β)
Option 3 -
α = β/(1-α)
Option 4 -
β = α/(1+α)
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1 Answer
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Correct Option - 1
Detailed Solution:I? = I? + I? ⇒ I? /I? = 1 + I? /I? ⇒ 1/α = 1 + 1/β = (β+1)/β ⇒ α = β/ (1+β)
⇒ 1/β = 1/α - 1 = (1-α)/α ⇒ β = α/ (1-α)
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