Non Inverting Amplifier MCQ Quiz - Objective Question with Answer for Non Inverting Amplifier - Download Free PDF

Last updated on Apr 8, 2025

Latest Non Inverting Amplifier MCQ Objective Questions

Non Inverting Amplifier Question 1:

In a non-inverting OPAMP, if R1 = 20 K ohms and Rf = 200 K ohms, then find the gain of the amplifier.

  1. 11
  2. 10
  3. 1.1
  4. 100

Answer (Detailed Solution Below)

Option 1 : 11

Non Inverting Amplifier Question 1 Detailed Solution

The correct answer is option 1):(11)

Concept:

In a non-inverting OPAMP

F1 S.B Shubham 02.06.20 D 15

The voltage gain of a non-inverting amplifier is given by

Av=1+R2R1

Since the gain is always a positive value

It is termed a non-inverting amplifier. We also observe that the gain is always greater than 1 for a non-inverting amplifier.

Calculation: 

R1 = 20 kΩ and R2 = 200 kΩ

The voltage gain

Av=1+R2R1

AV = 1 + 20020

= 11 

Non Inverting Amplifier Question 2:

Consider the circuit shown below. The dc gain v0/vi is

F1 Shraddha Jaideep 16.11.2021 D11

  1. 1
  2. 1.58
  3. 2
  4. 4.61

Answer (Detailed Solution Below)

Option 2 : 1.58

Non Inverting Amplifier Question 2 Detailed Solution

Concept:

F1 S.B Shubham 02.06.20 D 15

The voltage gain of a non-inverting amplifier is given by:

Av=1+R2R1

Since the gain is always a positive value, it is termed as a non-inverting amplifier.

We also observe that the gain is always greater than 1 for a non-inverting amplifier.

Calculation:

For dc, all capacitors are open circuited then op-amp is a non-inverting amplifier

F1 Shraddha Jaideep 16.11.2021 D12

v0=(1+1017)viv0vi=1.58

Non Inverting Amplifier Question 3:

Decreasing the gain in the given circuit could be achieved by

F1 Shubham.B 19-01-21 Savita D21

  1. Decreasing the input voltage
  2. Increasing the feedback resistor Rf
  3. Increasing the input resistor Ri
  4. Decreasing the input resistor Ri

Answer (Detailed Solution Below)

Option 3 : Increasing the input resistor Ri

Non Inverting Amplifier Question 3 Detailed Solution

Concept:

F1 S.B Madhu 10.07.20 D2

 

For an inverting amplifier, as shown above, the voltage gain is given by:

Av=VoutVin

The ideal opamp will be having virtual ground and the current entering the op-amp will be 0.

Therefore, by applying KCL at the inverting terminal of opamp we get:

Vin0R1=0VoutRf

VoutVin=RfRi

∴ The gain can be reduced by increasing the value of Ri

Top Non Inverting Amplifier MCQ Objective Questions

In a non-inverting OPAMP, if R1 = 20 K ohms and Rf = 200 K ohms, then find the gain of the amplifier.

  1. 11
  2. 10
  3. 1.1
  4. 100

Answer (Detailed Solution Below)

Option 1 : 11

Non Inverting Amplifier Question 4 Detailed Solution

Download Solution PDF

The correct answer is option 1):(11)

Concept:

In a non-inverting OPAMP

F1 S.B Shubham 02.06.20 D 15

The voltage gain of a non-inverting amplifier is given by

Av=1+R2R1

Since the gain is always a positive value

It is termed a non-inverting amplifier. We also observe that the gain is always greater than 1 for a non-inverting amplifier.

Calculation: 

R1 = 20 kΩ and R2 = 200 kΩ

The voltage gain

Av=1+R2R1

AV = 1 + 20020

= 11 

Decreasing the gain in the given circuit could be achieved by

F1 Shubham.B 19-01-21 Savita D21

  1. Decreasing the input voltage
  2. Increasing the feedback resistor Rf
  3. Increasing the input resistor Ri
  4. Decreasing the input resistor Ri

Answer (Detailed Solution Below)

Option 3 : Increasing the input resistor Ri

Non Inverting Amplifier Question 5 Detailed Solution

Download Solution PDF

Concept:

F1 S.B Madhu 10.07.20 D2

 

For an inverting amplifier, as shown above, the voltage gain is given by:

Av=VoutVin

The ideal opamp will be having virtual ground and the current entering the op-amp will be 0.

Therefore, by applying KCL at the inverting terminal of opamp we get:

Vin0R1=0VoutRf

VoutVin=RfRi

∴ The gain can be reduced by increasing the value of Ri

Non Inverting Amplifier Question 6:

In a non-inverting OPAMP, if R1 = 20 K ohms and Rf = 200 K ohms, then find the gain of the amplifier.

  1. 11
  2. 10
  3. 1.1
  4. 100

Answer (Detailed Solution Below)

Option 1 : 11

Non Inverting Amplifier Question 6 Detailed Solution

The correct answer is option 1):(11)

Concept:

In a non-inverting OPAMP

F1 S.B Shubham 02.06.20 D 15

The voltage gain of a non-inverting amplifier is given by

Av=1+R2R1

Since the gain is always a positive value

It is termed a non-inverting amplifier. We also observe that the gain is always greater than 1 for a non-inverting amplifier.

Calculation: 

R1 = 20 kΩ and R2 = 200 kΩ

The voltage gain

Av=1+R2R1

AV = 1 + 20020

= 11 

Non Inverting Amplifier Question 7:

Consider the circuit shown below. The dc gain v0/vi is

F1 Shraddha Jaideep 16.11.2021 D11

  1. 1
  2. 1.58
  3. 2
  4. 4.61

Answer (Detailed Solution Below)

Option 2 : 1.58

Non Inverting Amplifier Question 7 Detailed Solution

Concept:

F1 S.B Shubham 02.06.20 D 15

The voltage gain of a non-inverting amplifier is given by:

Av=1+R2R1

Since the gain is always a positive value, it is termed as a non-inverting amplifier.

We also observe that the gain is always greater than 1 for a non-inverting amplifier.

Calculation:

For dc, all capacitors are open circuited then op-amp is a non-inverting amplifier

F1 Shraddha Jaideep 16.11.2021 D12

v0=(1+1017)viv0vi=1.58

Non Inverting Amplifier Question 8:

Decreasing the gain in the given circuit could be achieved by

F1 Shubham.B 19-01-21 Savita D21

  1. Decreasing the input voltage
  2. Increasing the feedback resistor Rf
  3. Increasing the input resistor Ri
  4. Decreasing the input resistor Ri

Answer (Detailed Solution Below)

Option 3 : Increasing the input resistor Ri

Non Inverting Amplifier Question 8 Detailed Solution

Concept:

F1 S.B Madhu 10.07.20 D2

 

For an inverting amplifier, as shown above, the voltage gain is given by:

Av=VoutVin

The ideal opamp will be having virtual ground and the current entering the op-amp will be 0.

Therefore, by applying KCL at the inverting terminal of opamp we get:

Vin0R1=0VoutRf

VoutVin=RfRi

∴ The gain can be reduced by increasing the value of Ri

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