In an n-p-n circuit transistor, the collector current is 10 mA. If 80% electrons emitted reach the collector, then

Options

A. The emitter current will be `2.5 mA`
B. The emitter current will be `12.5 mA`
C. The base current wil be `2.5 mA`
D. The base current will be `22.5 mA`

Answer

C

Explanation

`I_(E ) = ((100)/(80)) I_(C ) = ((100)/(80)) (10) = 12.5 mA`
`I_(B) = I_(E ) - I_(C ) = 12.5 - 10 = 2.5 mA`