Simple LED Circuit Quiz

What is the main job of a battery in a circuit?

• To provide power

• To light up

• To connect components

• To block electricity

Which component is used to turn a circuit on and off?

• A switch

• A resistor

• A battery

• An LED

What does LED stand for?

• Light Emitting Diode

• Low Energy Device

• Liquid Electronic Display

• Laser Emitting Diode

Why is a resistor important to use with an LED?

• To protect the LED from burning out

• To make the LED brighter

• To store extra power

• To act as a switch

What is a breadboard used for in robotics projects?

• For prototyping and testing circuits

• To cut wires to the right length

• As the main power source

• To write the code for the robot

An LED has two legs, a longer one and a shorter one. What is the longer leg called?

• Anode (+)

• Cathode (-)

• Resistor

• Switch

What is the main function of a capacitor in a circuit?

• To store electrical energy

• To create light

• To resist the flow of electricity

• To permanently stop the current

If you build a circuit and the LED does not light up, what is the first thing you should check?

• If all the components are connected correctly

• If the resistor has the right color code

• If the capacitor is large enough

• If the breadboard is clean

What do we call a path that allows electricity to flow from the battery, through the components, and back to the battery?

• A closed circuit

• An open circuit

• A short circuit

• A breadboard circuit

On a breadboard, the long rows at the top and bottom, marked with '+' and '-', are called what?

• Power rails

• Component rows

• The central divider

• Switching lines