Podcast
Questions and Answers
What happens when the voltage exceeds a turn-on threshold for a color LED?
What happens when the voltage exceeds a turn-on threshold for a color LED?
- Electricity stops flowing and brightness decreases
- Electricity flows but brightness decreases
- Electricity stops flowing but brightness increases
- Electricity flows and brightness increases (correct)
What is the purpose of the internal resistor in a color LED?
What is the purpose of the internal resistor in a color LED?
- To control the flow of electricity in the LED
- To make the LED more energy efficient
- To increase the brightness of the LED
- To protect the LED from burning out due to high current (correct)
What is the function of a photoresistor?
What is the function of a photoresistor?
- To detect changes in air pressure
- To change its resistance based on light intensity (correct)
- To convert electricity into sound
- To control or limit the current in a circuit
What do slide & press switches do when they are 'ON'?
What do slide & press switches do when they are 'ON'?
How does a speaker convert electricity into sound?
How does a speaker convert electricity into sound?
What is the role of resistors in a circuit?
What is the role of resistors in a circuit?
What is the movement of sub-atomic charged particles through a material due to electrical pressure?
What is the movement of sub-atomic charged particles through a material due to electrical pressure?
What is the measure of how fast electricity is flowing in a wire?
What is the measure of how fast electricity is flowing in a wire?
What is the combination of voltage and current?
What is the combination of voltage and current?
What component or circuit represents how much it resists the electrical pressure (voltage) and limits the flow of electric current?
What component or circuit represents how much it resists the electrical pressure (voltage) and limits the flow of electric current?
What happens when resistance increases?
What happens when resistance increases?
What is the measure of how fast energy is moving through a wire?
What is the measure of how fast energy is moving through a wire?
Which component controls the flow of electricity like valves and faucets control water?
Which component controls the flow of electricity like valves and faucets control water?
What causes vibrations that create variations in air pressure that your ears feel like sound from a speaker?
What causes vibrations that create variations in air pressure that your ears feel like sound from a speaker?
What pushes electricity through a circuit, like a pump pushes water through pipes?
What pushes electricity through a circuit, like a pump pushes water through pipes?
What is the measure of how fast electricity is flowing in a wire?
What is the measure of how fast electricity is flowing in a wire?
What is the purpose of the internal resistor in a color LED?
What is the purpose of the internal resistor in a color LED?
What is the role of resistors in a circuit?
What is the role of resistors in a circuit?
What component controls the flow of electricity like valves and faucets control water?
What component controls the flow of electricity like valves and faucets control water?
How does a speaker convert electricity into sound?
How does a speaker convert electricity into sound?
What happens when resistance increases in a circuit?
What happens when resistance increases in a circuit?
What pushes electricity through a circuit, like a pump pushes water through pipes?
What pushes electricity through a circuit, like a pump pushes water through pipes?
What is the measure of how fast electricity is flowing in a wire?
What is the measure of how fast electricity is flowing in a wire?
What pushes electricity through a circuit, like a pump pushes water through pipes?
What pushes electricity through a circuit, like a pump pushes water through pipes?
Which component controls the flow of electricity like valves and faucets control water?
Which component controls the flow of electricity like valves and faucets control water?
What causes vibrations that create variations in air pressure that your ears feel like sound from a speaker?
What causes vibrations that create variations in air pressure that your ears feel like sound from a speaker?
What is the movement of sub-atomic charged particles through a material due to electrical pressure?
What is the movement of sub-atomic charged particles through a material due to electrical pressure?
What is the combination of voltage and current?
What is the combination of voltage and current?
What happens when resistance increases?
What happens when resistance increases?
What is the measure of how fast energy is moving through a wire?
What is the measure of how fast energy is moving through a wire?
What is the role of resistors in a circuit?
What is the role of resistors in a circuit?
What happens when the voltage exceeds a turn-on threshold for a color LED?
What happens when the voltage exceeds a turn-on threshold for a color LED?
