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Worksheets10.6 Switches and Transistors
Total questions: 20
Worksheet time: 10mins
What is the primary function of a switch in an electrical circuit?
To amplify the current
To increase the voltage
To turn the flow of current on or off
To decrease the resistance
In the water flow model, what is a switch equivalent to?
A pipe
A reservoir
A pump
A faucet
What are the criteria engineers use to develop better switches?
Higher speed, smaller size, greater reliability, increased efficiency
Lower speed, larger size, less reliability, decreased efficiency
Higher speed, larger size, greater reliability, decreased efficiency
Lower speed, smaller size, less reliability, increased efficiency
What are the two states of a switch?
High and low
Positive and negative
On and off
Open and closed
What happens when a switch is open?
It short circuits the circuit
It presents zero resistance to electric current
It presents infinite resistance to electric current
It allows maximum current flow
What is a relay?
A switch operated by a capacitor
A switch operated by a resistor
A switch operated by an electromagnet
A switch operated by a manual lever
What is the original use of a relay?
Relaying telegraph messages over long distances
Amplifying radio signals
Switching power in electrical grids
Controlling home appliances
What is a transistor primarily made of?
Conductors
Insulators
Semiconductors
Superconductors
What element is most commonly used in transistors?
Copper
Carbon
Silicon
Germanium
What is the process of adding trace amounts of other elements to silicon called?
Doping
Alloying
Mixing
Blending
What is the role of the gate in a MOSFET?
To act as a heat sink
To control the flow of charge from source to drain
To provide power to the transistor
To amplify the current
What happens when the gate of an npn MOSFET is given a positive voltage?
It blocks the flow of charge
It promotes the flow of charge from source to drain
It reverses the flow of charge
It short circuits the transistor
What is the main advantage of transistors over relays?
They are less reliable
They consume more power
They are smaller, faster, efficient, and reliable
They are larger and slower
Who were the co-inventors of the integrated circuit?
Thomas Edison and Nikola Tesla
Alexander Graham Bell and Guglielmo Marconi
Jack Kilby and Robert Noyce
Steve Jobs and Bill Gates
What process is used to create integrated circuits on silicon chips?
Laser Cutting
3D Printing
Photolithography
Electroplating
What is the main function of a CPU in a computer?
To store data
To carry out binary logic and arithmetic
To display graphics
To manage network connections
What does RAM stand for?
Rapid Access Module
Remote Access Memory
Random Access Memory
Read-Only Memory
What is the main difference between hardware and software?
Hardware is always less expensive than software
Hardware is always more expensive than software
Hardware is intangible, software is tangible
Hardware is tangible, software is intangible
What is the role of software in a computer?
To enable a collection of switches to carry out computations
To physically connect different hardware parts
To provide power to the hardware
To cool down the hardware components
What is the size of a modern integrated circuit chip?
The size of a car
The size of a book
The size of a fingernail
The size of a football field
