WorksheetsUnderstanding Operational Amplifiers Quiz
Total questions: 18
Worksheet time: 9mins
What is the primary function of an operational amplifier (op-amp)?
To amplify voltage signals
To convert AC to DC
To store electrical energy
To measure resistance
In an inverting amplifier configuration, what is the phase difference between the input and output signals?
0 degrees
90 degrees
180 degrees
270 degrees
Which of the following is the formula for the voltage gain of an inverting amplifier?
1+RinRf
−RinRf
RfRin
1−RinRf
In a non-inverting amplifier, if the input voltage is 2V and the gain is 5, what is the output voltage?
2V
5V
10V
15V
What is the gain-bandwidth product of an op-amp?
The product of the gain and the bandwidth
The sum of the gain and the bandwidth
The difference between the gain and the bandwidth
The ratio of the gain to the bandwidth
Which component is primarily responsible for providing feedback in an op-amp circuit?
Capacitor
Resistor
Inductor
Diode
What is the typical unit of measurement for the gain-bandwidth product?
Hertz (Hz)
Decibels (dB)
Volts (V)
Amperes (A)
In a feedback loop of an op-amp, what is the purpose of negative feedback?
To increase the gain
To stabilise the gain
To decrease the bandwidth
To increase the input impedance
Which of the following is a common application of operational amplifiers?
Digital signal processing
Audio amplification
Data storage
Wireless communication
What is the input impedance of an ideal op-amp?
0 ohms
50 ohms
1000 ohms
Infinite
In an inverting amplifier, if Rf=10kΩ and Rin=2kΩ , what is the voltage gain?
-2
-5
-10
-20
What is the output impedance of an ideal op-amp?
0 ohms
50 ohms
1000 ohms
Infinite
Which of the following is true for a non-inverting amplifier?
The output is in phase with the input
The output is 180 degrees out of phase with the input
The output is 90 degrees out of phase with the input
The output is 270 degrees out of phase with the input
What is the effect of increasing the feedback resistance in an inverting amplifier?
Decreases the gain
Increases the gain
Decreases the bandwidth
Increases the bandwidth
Which of the following is NOT an application of operational amplifiers?
Voltage follower
Integrator
Differentiator
Transformer
What is the typical open-loop gain of an operational amplifier?
10
1000
100,000
100
Which configuration of an op-amp is used to add multiple input signals?
Summing amplifier
Non-inverting amplifier
Voltage follower
Inverting amplifier
What is the effect of positive feedback in an op-amp circuit?
Increases the bandwidth
Causes oscillation
Stabilizes the gain
Decreases the input impedance
