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In an n-p-n transistor circuit, the coll...

In an n-p-n transistor circuit, the collector current ia 10 mA. If 90% of the electrons emitted reach the collector.

A

`I_(B)=-1mA`

B

`I_(C)=1mA`

C

`I_(E)=11mA`

D

`I_(E)=9mA`

Text Solution

Verified by Experts

The correct Answer is:
C
`I_(c)` equal to `90%` of `I_(e)`
`therefore I_(c)=(90)/(100)I_(e)`
`therefore I_(e)=(10)/(9) xx I_(c)=(10)/(9)xx10`
`I_(e)=(100)/(9)=11.1 mA`
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