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A transistor is operated in common emitt...

A transistor is operated in common emitter configuration at `V_(c)=2 V` such that a change in the base current from `100 muA` to `300 muA` produces a change in the collector current from `10 mA` to `20 mA`. The current gain is

A

25

B

50

C

75

D

100

Text Solution

Verified by Experts

The correct Answer is:
B
Current gain is given by
`beta=(Delta"/"_(C))/(Delta"/"_(B))=(10xx10^(-3))/(200xx10^(-6))=50`
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