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The value of beta of a transistor is 19....

The value of `beta` of a transistor is 19. The value of `alpha` will be ……

A

0.93

B

0.98

C

0.99

D

0.95

Text Solution

Verified by Experts

The correct Answer is:
D
`I_(E)= I_(B)+ I_(C)`
`implies (I_(E))/(I_(C))= (I_(B))/(I_(C))+1 implies (1)/(alpha)= (1)/(beta)+1= (1)/(19)+1`
`implies (1)/(alpha)= (20)/(19) implies alpha= (19)/(20)= 0.95`
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