A collector feedback bias amplifier circuit with a VCC of 15 V ...

[maychende]

A collector feedback bias amplifier circuit with a VCC of 15 V has an hFE of 200. The collector resistor (RC) is rated at 1.2 k and the base resistor (RB) has a value of 220 k. The circuit's base current (IB) is
 
  A) 59.6 A B) 31 A C) 65 A D) 32.6 A

Question 2

An LED and its current-limiting resistor are connected to a driving circuit with a peak output of 9 V. The LED has a forward voltage (VF) rating of 1.6 to 2.2 V and a forward current (IF) rating of 15 mA (maximum). Using the 80 guideline, what is the smallest standard-value current limiting resistor needed in the circuit?
 
  A) 720  B) 520  C) 680  D) 570

[SAUXC]

Answer to Question 1

B

Answer to Question 2

C

[maychende]

TY

[SAUXC]

You're welcome