Amplify Benchmark

Dylan puts two magnetic toy trains very close to each other on a track. What will happen next, and why?

• The trains will not move because the magnets are not touching.

• The trains will move closer to each other because the magnetic force will pull the trains together.

• The trains will move away from each other because the magnetic force will push the trains apart.

• The trains will move away from each other because the magnets are not touching.

Tags

NGSS.HS-PS3-5

What is the primary function of an amplifier in a scientific experiment?

• To increase the amplitude of a signal

• To decrease the amplitude of a signal

• To convert electrical energy to mechanical energy

• To store electrical energy

Which of the following components is essential in an electronic amplifier circuit?

• Resistor

• Capacitor

• Transistor

• Inductor

In the context of sound waves, what does an amplifier do?

• Increases the frequency of the sound

• Increases the amplitude of the sound

• Decreases the wavelength of the sound

• Changes the speed of the sound

Which unit is used to measure the gain of an amplifier?

• Hertz

• Decibel

• Watt

• Volt

Tags

NGSS.HS-PS4-5

What is the role of feedback in an amplifier circuit?

• To increase distortion

• To stabilize gain

• To reduce power consumption

• To increase noise

In a laboratory setting, why might an amplifier be used with a sensor?

• To decrease the sensor's sensitivity

• To increase the sensor's range

• To amplify the sensor's output signal

• To convert the sensor's signal to digital

Which type of amplifier is most commonly used in audio applications?

• Operational amplifier

• Power amplifier

• Voltage amplifier

• Current amplifier

Tags

NGSS.HS-PS4-1

What is the effect of negative feedback on an amplifier's performance?

• Increases gain

• Reduces bandwidth

• Improves linearity

• Increases distortion

In an experiment, an amplifier is used to boost a signal from 2V to 10V. What is the voltage gain?

• 2

• 5

• 10

• 20