WorksheetsElectronics Quiz
Total questions: 15
Worksheet time: 8mins
What is a breadboard used for?
To solder components together
To build and test electronic circuits without soldering
To measure voltage
To store electronic components
What does an LED do?
Emits light when electricity flows
Stores energy
Limits current
Acts as a switch
What is the purpose of a resistor in a circuit?
To connect different circuits
To measure voltage
To limit current and protect components
To emit light
How do you identify the value of a resistor?
By measuring it with a multimeter
By using the color code
By its shape
By its size
What happens if an LED is connected without a resistor?
It will flash
It will not light up
It may burn out
It will work perfectly
What is a push button?
A type of resistor
A mechanical switch that allows electricity to flow when pressed
A type of LED
A tool for measuring voltage
What is the function of a relay?
To measure resistance
To control a larger voltage or current with a small current
To emit light
To connect two circuits directly
What does NC stand for in relay circuits?
New Circuit
Normally Closed
Non-Connected
Negative Current
What happened when the push button was pressed in a relay circuit?
The relay clicks and the LED turns on
Nothing happens
The LED turns off
The circuit opens
Why is a relay used in circuits?
To increase the voltage directly in the circuit
To control a high-power circuit using a low-power signal
To measure current flowing in the circuit
To store electrical energy like a battery
What is the first step in building a basic LED circuit?
Connect the power source
Measure the voltage
Connect the resistor
Place the LED on the breadboard
What does NO stand for in relay circuits?
New Output
Neutral Operation
Non-Opened
Normally Opened
What should you check before turning on the circuit?
The polarity of the components
The color of the wires
The type of LED used
The size of the breadboard
Why was the multimeter set to Voltage (V) when measuring the voltage across the LED?
Because LEDs work with alternating current (AC)
Because DC voltage is only used for motors
Because LEDs operate with direct current (DC), and the measurement must match the type of voltage used
Because AC voltage gives more accurate readings on LEDs
What is one way to improve a circuit?
By reducing the number of parts
By using larger components
By adding sensors or smart features
By using more wires
