Question

If the ratio of change in emitter current to the corresponding change in collector current is 1.05 then the value of current gain beta is

Answer 1

Current gain $\beta$ will be 19.833

Explanation:

It is given ratio of emitter current and collector current as 1.05

So $\frac{I_E}{I_C}=1.05$

We know that $\alpha$ is the ratio of collector current and emitter current

So $\alpha =\frac{I_C}{I_E}=\frac{1}{1.05}=0.952$

Current gain $\beta$ is given by

$\beta =\frac{\alpha }{1-\alpha }=\frac{0.925}{1-0.952}=19.833$

So current gain $\beta$ will be 19.833

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The reverse saturation current of a n-p-n transistor operating in cb configuration is 10a. For an emitter current of 2.4ma, the collector current is 2.26ma. Calculate the current gain and base current.

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For a common emitter amplifier dc current gain is 100 . if the base current is 20 , calculate the collector and emitter current ?

For a common emitter amplifier dc current gain is 100 . if the base current is 20 , calculate the collector and emitter current ?