If `alpha`-current gain of a transistor is 0.98 . What is the value of `beta`-current gain of the transistor ?

Options

A. 0.49
B. 49
C. 4.9
D. 5

Answer

B

Explanation

By constants (or parameters) of a transisitor where ` alpha and beta` are the AC current gains of a trasistor in the common - base configuration and in the common - emitter configuration respectively.
`beta=alpha/(1-alpha)=(0.98)/(1-0.98) `
where, `alpha = 0.98 , beta = ? `
`=(0.98)/(0.02)=98/2=49`