Electronic Components and Their Functions Quiz

Name two input components used in electronic systems to detect changes in the environment.

• LDR and Thermistor

• Buzzer and Switch

• LED and Resistor

• Transistor and Capacitor

Describe how a push to make (PTM) switch works in a circuit.

• It closes the circuit when pressed, allowing current to flow.

• It opens the circuit when pressed, stopping the current flow.

• It increases the voltage when pressed.

• It decreases the resistance when pressed.

Explain how a transistor functions as an electronic switch in a touch-sensitive light.

• It amplifies the current to turn on the light.

• It blocks the current to keep the light off.

• It allows current to flow when a small voltage is applied to its base.

• It decreases the voltage to dim the light.

Name the component that limits the flow of current in a circuit to protect other parts.

• Resistor

• LED

• Transistor

• Capacitor

Describe how an LDR could be used in a street lighting system.

• It turns the lights on during the day.

• It turns the lights off during the night.

• It adjusts the light intensity based on ambient light levels.

• It changes the color of the lights.

Explain why LEDs are connected in series with resistors in electronic circuits.

• To increase the brightness of the LEDs.

• To limit the current flowing through the LEDs.

• To decrease the voltage across the LEDs.

• To change the color of the LEDs.