Power gain for a common base amplifier is 400 and voltage gain 420. Find the collector current (in mA ) when base current is `100 mu A`

Answer

`02.00`

Explanation

`A_(p) = alphaA_(v)`
`rArr 400 = alpha xx 420`
`rArr alpha = 40/42 = 20/21`
`rArr beta = 20`
And, `l_(c ) = beta xx l_(b) = 2 mA`