Question
In a common-base amplifier configuration, the base current (IB) is 10μA, and the collector current (IC) is 2mA. Calculate the current gain (α) of the transistor.
In a common-base amplifier configuration, the base current (IB) is 10μA, and the collector current (IC) is 2mA. Calculate the current gain (α) of the transistor.
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Koala Tutor
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The current gain (α) of a transistor can be calculated using the formula:
α = IC / IB
Given that IB = 10μA and IC = 2mA, we can substitute these values into the formula:
α = 2mA / 10μA
First, we need to convert the units to ensure they are consistent.
1mA = 1000μA
So, IC = 2mA = 2 x 1000μA = 2000μA
Substituting the values:
α = 2000μA / 10μA = 200
Therefore, the current gain (α) of the transistor is 200.
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