Learning Path
Question & Answer
Choose the Best Answer
Measuring the voltage drop across a resistor in a closed circuit
Amplifying the difference between two sensor outputs to control a motor
Directly connecting a battery to power a light bulb
Using a capacitor to filter high-frequency signals from an audio source
Understanding the Answer
Let's break down why this is correct
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 think an op-amp only measures voltages, but it mainly amplifies; Connecting a battery to a bulb uses a simple power source, not an op-amp.
Key Concepts
Operational Amplifiers Basics
medium level question
understand
Deep Dive: Operational Amplifiers Basics
Master the fundamentals
Definition
Operational amplifiers (op-amps) are devices that amplify the difference between their two inputs by a large gain factor. They have five terminals, including power supply terminals, inverting and non-inverting inputs, and an output terminal.
Topic Definition
Operational amplifiers (op-amps) are devices that amplify the difference between their two inputs by a large gain factor. They have five terminals, including power supply terminals, inverting and non-inverting inputs, and an output terminal.
Ready to Master More Topics?
Join thousands of students using Seekh's interactive learning platform to excel in their studies with personalized practice and detailed explanations.