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. `200 k Omega`
B. `1 k Omega`
C. `500 k Omega`
D. `2 k Omega`

Answer

A

Explanation

Applying `KVL` to `QCETSRQ`, we get
`V_(C C) = I_(C) R_(C) + V_( CE)` and calculate `I_(C)`

`beta=(I_(C))/(I_(B))rArr I_(B)=(I_(C))/(beta)`
Applying `KVL` to `PUTSROP`, we get
`V_( C C) =I_(B)R_(B) rArr V_(BE)` here `V_(BE)` is negligible
`:. V_(C C) =I_(B)R_(B) rArr I_(B)=(V_(C C))/(R_(B))`.