LED Quiz

What is the positive side of an LED called?

• Anode

• Cathode

• Diode

• Photon

What special feature can LEDs have with a special circuit?

• They can blink on and off.

• They can make sounds.

• They can grow larger.

• They can produce heat.

What determines the color of the light in an LED?

• The energy of the photon

• The size of the LED

• The shape of the LED

• The material of the LED

What is the shape of the positive side of an LED?

• Flat edge

• Round edge

• Pointed edge

• Curved edge

What is the purpose of connecting the positive side of an LED to a positive battery terminal?

• To make the LED light up

• To make the LED heavier

• To make the LED larger

• To make the LED quieter

What is a photon?

• A tiny packet of light energy

• A tiny part that lets electricity flow in one direction

• Tiny particles that carry electricity

• A part that slows down the flow of electricity

Why are LEDs considered energy-efficient?

• They use less energy and don't get hot

• They use more energy and get hot

• They use the same energy and get hot

• They use more energy and don't get hot

What helps protect an LED from too much power?

• A resistor

• A photon

• An electron

• A diode

What is the function of a diode in a flashlight?

• Helps electricity flow to the light bulb

• Slows down the flow of electricity

• Carries electricity

• Creates light

What is the role of electrons in a circuit?

• Carry electricity

• Create light

• Slow down the flow of electricity

• Let electricity flow in one direction