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A BJT biasing circuit is shown in the figure. The transistor is operating in the active region with VBE = 0.7 V. The value of collector current in mA is

A BJT biasing circuit is shown in the figure. The transistor is operating in the active region with VBE = 0.7 V. The value of collector current in mA is Correct Answer 2.817

[ alt="F1 U.B M.P 25.09.19 D 12" src="//storage.googleapis.com/tb-img/production/19/10/F1_U.B_M.P_25.09.19_D%2012.png" style="width: 322px; height: 268px;">

Vcc = RBIB + VBE + REIE

⇒ 12 = 300 × 103 × IB + 0.7 + 1 × 103 × IB (1 + β)

⇒ 12 = 300 × 103 × IB + 0.7 + 1 × 103 × IB (1 + 100)

⇒ IB = 0.0281 mA

Now as we know,

Ic= βIB

⇒ Ic = 100 × 0.0281 mA

⇒ Ic = 2.81 mA

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