Question

Find the bias current from the given circuit

(a) 30mA

(b) 3mA

(c) 0.30mA

(d) 0.03mA

I have been asked this question by my college professor while I was bunking the class.

My question is from Very High Input Impedance Circuit topic in section Operational Amplifier Applications of Linear Integrated Circuits

Answer 1

The accurate choice is (c) 0.30mA

Here's an easy explanation: The bias current is given as Iin =Vin/Rin = 3v/10kΩ.

Where, Iin= Ib =0.3mA.