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Analog Electronics - Engineering

Q1:

In the circuit of figure β = 50 and VBE = 0.5 V. The quiescent value of base current IB is

A about 28 μA

B about 28 mA

C about 0.28 μA

D about 2.8 A

ANS:A - about 28 μA

Answer is correct.

IBQ = (2-0.5)/(4k+(51)(1k)).
IBQ = 27.2727 uA or 28 uA.