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In n-p-n transistor circuit, the collect...

In n-p-n transistor circuit, the collector current is 20 mA. If `90%` of the electrons emitted reache the collector, then the

A

the emitter current will be 18 mA

B

emitter current will be 22 mA

C

base current will be 2mA

D

base current will be 1mA

Text Solution

Verified by Experts

The correct Answer is:
B, C
`I_(C)=90%I_(E)rArrI_(E)=(100)/(90)xxI_(C)=(100)/(90)xx20=22mA`
`I_(B)=I_(E)=I_(C)=22-20=2mA`
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