32 Questions
What happens when the voltage exceeds a turn-on threshold for a color LED?
Electricity flows and brightness increases
What is the purpose of the internal resistor in a color LED?
To protect the LED from burning out due to high current
What is the function of a photoresistor?
To change its resistance based on light intensity
What do slide & press switches do when they are 'ON'?
Connect the wires in a circuit
How does a speaker convert electricity into sound?
By making mechanical vibrations that create variations in air pressure
What is the role of resistors in a circuit?
To control or limit the current in a circuit
What is the movement of sub-atomic charged particles through a material due to electrical pressure?
Current
What is the measure of how fast electricity is flowing in a wire?
Current
What is the combination of voltage and current?
Power
What component or circuit represents how much it resists the electrical pressure (voltage) and limits the flow of electric current?
Resistors
What happens when resistance increases?
Less current flows
What is the measure of how fast energy is moving through a wire?
Power
Which component controls the flow of electricity like valves and faucets control water?
Transistors
What causes vibrations that create variations in air pressure that your ears feel like sound from a speaker?
Plates stretching due to electrical signal
What pushes electricity through a circuit, like a pump pushes water through pipes?
Power sources
What is the measure of how fast electricity is flowing in a wire?
Current
What is the purpose of the internal resistor in a color LED?
To protect the LED from burning out due to high current
What is the role of resistors in a circuit?
To control or limit the current in a circuit
What component controls the flow of electricity like valves and faucets control water?
Slide & press switch
How does a speaker convert electricity into sound?
By making mechanical vibrations
What happens when resistance increases in a circuit?
The flow of electricity is controlled or limited
What pushes electricity through a circuit, like a pump pushes water through pipes?
Voltage
What is the measure of how fast electricity is flowing in a wire?
Current
What pushes electricity through a circuit, like a pump pushes water through pipes?
Voltage
Which component controls the flow of electricity like valves and faucets control water?
Switch
What causes vibrations that create variations in air pressure that your ears feel like sound from a speaker?
Electrical signal
What is the movement of sub-atomic charged particles through a material due to electrical pressure?
Electricity
What is the combination of voltage and current?
Power
What happens when resistance increases?
Less current flows
What is the measure of how fast energy is moving through a wire?
Power
What is the role of resistors in a circuit?
Limit the flow of electricity
What happens when the voltage exceeds a turn-on threshold for a color LED?
The LED turns on
Test your knowledge of color LED technology with this quiz. Learn about the forward direction, voltage thresholds, brightness, internal resistor, and more.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
