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A transistor is operated in common emitt...

A transistor is operated in common emitter configuration at constant collector voltage `V_(c)=1.5 V` such that a change in the base current from `100 muA` to `150 muA` produces a change in the collector current from `5 mA` to `10 mA`. The current gain `(beta)` is

A

50

B

67

C

75

D

100

Text Solution

Verified by Experts

The correct Answer is:
D
Current gain, `beta=DeltaI_(c)//DeltaI_(b)`
`=((10-5)mA)/((150-100)muA)=(5xx10^(-3))/(50xx10^(-6))=100.`
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