Op-amp circuits worksheet with answers

Free printable Op-amp circuits worksheet: 6 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

New worksheetPractise online with hints

For teachers: free to print, copy and use in class. Every new worksheet has new values and its own answer key. A link to ExamProblems on your course page is appreciated.

Name: ____________________   Date: ____________

1.Easy
−+Vout​Rf​ = 22 kΩVin​ = −1.6 VR1​ = 1 kΩ

The circuit is an inverting amplifier. The op-amp is ideal and runs from ±15 V supplies; its output saturates at ±12 V. Find the output voltage Vout.

Vin = −1.6 VR1 = 1 kΩRf = 22 kΩVsat = ±12 V
Vout = V
2.Easy
−+Vout​Rf​ = 22 kΩVin​R1​ = ?

An inverting amplifier with an ideal op-amp must have a voltage gain of −10. The feedback resistor is Rf = 22 kΩ. Find the input resistor R1.

Av = −10Rf = 22 kΩ
R1 = kΩ
3.Medium
−+Vout​Rf​ = ?R1​ = 47 kΩVin​

Choose the feedback resistor Rf that gives this non-inverting amplifier a voltage gain of 4.

R1 = 47 kΩAv = 4
Rf = kΩ
4.Medium
−+Vout​Rf​ = 22 kΩR1​ = 2 kΩVin​ = −0.7 V

The op-amp is ideal and runs from ±15 V supplies. Find the output voltage Vout.

Vin = −0.7 VR1 = 2 kΩRf = 22 kΩ
Vout = V
5.Hard
−+Vout​C = 0.1 µFVin​ = 2.2 VR = 22 kΩ

The integrator uses an ideal op-amp with ±15 V supplies; its output saturates at ±13 V. The capacitor is uncharged when a constant input Vin = 2.2 V is applied at t = 0. How long after t = 0 does the output reach saturation? Find t.

Vin = 2.2 VR = 22 kΩC = 0.1 µFVsat = ±13 V
t = ms
6.Hard
−+Vout​Rf​ = 10 kΩV1​ = −1.2 VR1​ = 22 kΩV2​ = 1.3 VR2​ = 47 kΩ

The summing amplifier uses an ideal op-amp with ±15 V supplies. Find the output voltage Vout.

V1 = −1.2 VV2 = 1.3 VR1 = 22 kΩR2 = 47 kΩRf = 10 kΩ
Vout = V

Answer key

  1. 1. Vout = 12 V
  2. 2. R1 = 2.2 kΩ
  3. 3. Rf = 141 kΩ
  4. 4. Vout = −8.4 V
  5. 5. t = 13 ms
  6. 6. Vout = 0.2689 V

Full step-by-step solutions: practise this topic on examproblems.com.