Practice Questions
Click any question to see detailed solutions
What is the main function of a voltage follower using an operational amplifier?
A voltage follower gives the circuit a very high input impedance so it does not load the source. Other options are incorrect because It is easy to thi...
What is the primary reason for the high input impedance of an operational amplifier?
A high input impedance means the op‑amp draws almost no current from its input. Other options are incorrect because Some think a high input impedance ...
What is the significance of the slew rate in a voltage follower configuration of an operational amplifier?
The slew rate tells how fast the amplifier can change its output voltage per unit time. Other options are incorrect because Some think the slew rate l...
In a differentiator circuit using an operational amplifier, how does the gain relate to the differential input voltage?
In a differentiator the op‑amp uses a capacitor in the feedback path. Other options are incorrect because Some think the gain is fixed by resistors al...
In an inverting amplifier configuration using an operational amplifier, how does the slew rate affect the output signal when the input signal frequency is increased?
When the input changes very fast, the op‑amp can only change its output at a limited speed called the slew rate. Other options are incorrect because S...
Which of the following scenarios best illustrates the application of an operational amplifier in a circuit?
An op-amp takes the small voltage difference between its two inputs and makes a large output voltage. Other options are incorrect because People often...
You are designing a simple audio amplifier using an operational amplifier. You want to ensure that the amplifier outputs a clean sound without distortion. If the non-inverting input receives a signal that is 2V higher than the inverting input, what will be the output of the op-amp if it has a gain of 100?
An op-amp multiplies the voltage difference between its inputs by its gain. Other options are incorrect because This answer treats the output as the s...
When an operational amplifier is configured in a feedback loop and the output voltage is observed to stabilize at a certain value, what is the most likely cause of this stabilization?
When the op‑amp is in a feedback loop, it changes its output so that the voltage at the inverting input matches the non‑inverting input. Other options...
In a negative feedback configuration using an op-amp, what is the primary effect on the output voltage when the input voltage increases?
Negative feedback tells the op‑amp to move its output so that the difference between its two input pins stays at zero. Other options are incorrect bec...
Which of the following statements about operational amplifiers are true? Select all that apply.
An op‑amp can amplify any voltage that is within its range, so both AC and DC work. Other options are incorrect because Many think the output is simpl...
Operational Amplifier : Amplification :: Comparator : ?
A comparator watches two input voltages and produces a high or low output depending on which input is larger. Other options are incorrect because Ampl...
An operational amplifier amplifies the __________ between its two inputs, where the inputs are labeled as vp and vn.
An op‑amp’s job is to take the tiny voltage gap between its two pins and magnify it. Other options are incorrect because Some think an op‑amp multipli...
Which statement best describes the function of an operational amplifier?
An op‑amp makes a huge voltage that comes from the small difference between the two tiny voltages it sees. Other options are incorrect because Some th...
Arrange the following steps in the correct order to describe the functioning of an operational amplifier in a basic inverting amplifier configuration: A) The output voltage is fed back to the inverting input through a resistor, creating a feedback loop. B) The input signal is applied to the inverting input terminal. C) The op-amp amplifies the voltage difference between its inputs, resulting in an output voltage. D) The non-inverting input is connected to ground in this configuration.
First the input signal is applied to the inverting input. Other options are incorrect because This option puts grounding before the signal reaches the...
Master Operational Amplifiers Basics
Ready to take your understanding to the next level? Access personalized practice sessions, progress tracking, and advanced learning tools.