In the cuircuit shown here the transistor used has a current gain `beta=100`. What should be the bias resistor `R_(BE)` so that `V_(CE)=5V("neglect "V_(BE))`

Options

A. `2xx10^(3)Omega`
B. `200xx10^(30Omega`
C. `1xx100^(6)Omega`
D. `500Omega`

Answer

B

Explanation

`DeltaI_(c )R_(L)=10-5=5`
`DeltaI_(c )xx10^(3)=5impliesDeltaI_(c )=5xx10^(-3)A`
`DeltaI-(B)=(DeltaI_(c ))/(beta)=(5xx10^(-3))/(100)=5xx10^(-5)A`
`R_(BE)=(v_(i))/(DeltaI_(B))=(10)/(5xx10^(-50))=2xx10^(5)Omega`
`=200xx10^(3)Omega`