A transistor having `abeta` equal to 80 has a change in base current of `250muA`, then the change in collector current is

Options

A. 20,000 mA
B. 200 mA
C. 2000 mA
D. 20 mA

Answer

D

Explanation

`beta = Deltai_(c)/Deltai_(b)`
`implies 80 = Delta i_(c)/(250 xx 10^(-6))`
`implies Delta i_(c) = 80 xx 250 xx 10^(-6) = 20 xx 10^(-3) = 20mA`