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WorksheetsDigital World Review
Total questions: 33
Worksheet time: 26mins
This is what analog signal looks like.
True
False
Which of the following is an advantage that digital signals/technology have over analog signals/technology?
They are missing little pieces of information after sampling
They can store a lot of information very easily in a small amount of space
They often require electricity
They have been used for thousands of years
Which of the following is a common real-world example of sampling?
Streaming hulu
Using the oven
Talking to someone on the phone
Posting an image of your boo on instagram
Transistors act like tiny "____________."
Electron sources
Switches
Batteries
Bees?
One function of the transistor is to_____________?
rectify
amplify
limit
control
transistor has 3 electrodes namely
PNP
NPN
Base/ Collector/ Emitter
Drain/ Gate/ Source
Which pin controls the transistor? (On/off)
Emitter
Base
Collector
None
When there is no current to the base, the transistor is ______.
On
Off
Which of the following true of n-type conductors?
The negative charges are mobile
The positive holes/charges are mobile
They are not doped with any elements. They are made of pure silicon.
It is doped so it has empty spaces (holes) where there are no electrons
Which of the following true of p-type conductors?
The negative charges are mobile
The positive holes/charges are mobile
They are not doped with any elements. They are made of pure silicon.
It is doped with an element that has an extra valence electron (five valence electrons)
How is a n-type semiconductor made?
It is doped with an element that has extra valence electrons (5 valance instead of 4)
It is doped with an element that has 1 fewer valence electron (3 valance instead of 4)
They are not doped with any elements. They are made of pure silicon.
Electrons flow through a transistor in the "on" position in this direction
Pass the Gate -> collector -> emitter
Emitter -> pass the gate -> collector
Pass the gate-> emitter -> collector
Collector-> pass the gate -> emitter
Collector -> emitter -> pass the gate
What is the depletion zone?
A layer of negative charges that acts as a barrier that prevents electrons from flowing from the collector to the emitter.
A layer of positive charges that acts as a barrier that prevents electrons from flowing from the emitter to the collector
A piece of metal that ejects electrons when light is shined onto it, transmitting a digital signal from the gate to the emitter
An area on the breadboard where you can't connect the alligator wire in because the wire has been depleted of mobile charges
Which of the following was NOT observed during the photoelectric effect phet simulation? (select all that apply)
Increasing the intensity (brightness) sometimes resulted in more electrons being ejected
smaller wavelength (higher frequency) light caused more energetic electrons to eject
Larger wavelength (lower frequency) light caused more energetic electrons to eject
If light did behave purely as a wave, what should have been observed in the photoelectric phet?
Any intensity of only certain colors wavelengths should have ejected electrons
Only some intensities of certain wavelengths should have ejected electrons
Any wavelength should have ejected electrons eventually at high intensities
All wavelengths should have ejected electrons eventually at all intensities
A particle of light is called a...
Photoelectron
Photon
Proton
Electron
What color of light has the greatest energy per photon?
Red
Green
Blue
Violet
The energy of photoelectrons emitted from a metal surface can be increased by
using light of higher frequency.
using light of longer wavelength.
using light of higher intensity.
using monochromatic, polarized light.
