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If a transistor has IC = 110 mA and IE = 55 mA, find the value of β?
  • a)
    1
  • b)
    7
  • c)
    9
  • d)
    11
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
If a transistor has IC= 110 mA and IE= 55 mA, find the value of β...
In common emitter, the term β stands for current gain. Current gain refers to the ratio between collector current and base current at a constant VCE.
β = IC/IB
In the common base, DC gain α refers to the ratio of the collector current IC and the emitter current IE.
The equation of dc current gain
α = IC/IE
Now, we can establish the relationship between α and β
β = α/ (1 - α)
Given
Emitter current I= 55 mA
Collector current IC = 110 mA
α = IC/I= 110/55 = 2
β = α/ (1 - α) = 2/ (1 - 2)
β = -2
Here the negative value of β indicates its direction, because by convention positive current is always termed as flowing into the device. So, the current gain is negative.
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Community Answer
If a transistor has IC= 110 mA and IE= 55 mA, find the value of β...
IB, the base current.

The base current (IB) can be calculated using the equation:

IB = IC - IE

Substituting the given values:

IB = 110 mA - 55 mA

IB = 55 mA
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If a transistor has IC= 110 mA and IE= 55 mA, find the value of β?a)1b)7c)9d)11Correct answer is option 'A'. Can you explain this answer?
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