Question

the current gain for a transistor in common base mode is 0.99 if the change in emitter current is 5mA then the change in collector current is

Answer 1

Ic/Ie=.99
Ic=.99×5=4.95mA

Answer 2

Hello friend....!!!

• in common base transistor : current gain is,

α =Ic / Ie ,

here 'Ic' represents current through collector and ' Ie' represents current through emitter

In the question it is given,

α = 0.99.
Ie = 5mA

Therefore,

Ic = α x Ie

Ic = 0.99 * 5mA

Ic = 4.95mA.

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Hope it helps...!!