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LED Circuit Basics Quiz

Authored by Academic Department

Information Technology (IT)

9th Grade

LED Circuit Basics Quiz
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12 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does LED stand for?

Light Emitting Device

Low Energy Diode

Light Emitting Diode

Linear Energy Driver

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of a resistor in a circuit with an LED?

To make the light brighter

To block the current

To reduce the current so the LED doesn’t burn out

To change the direction of the current

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which part of the LED is the positive leg (anode)?

The shorter leg

The longer leg

The flat side

The rounded side

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the LED doesn’t light up, what is the first thing you should check?

Color of the LED

Battery size

Direction of the LED

Type of wire

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does a resistor look like?

A round bulb

A flat chip

A small cylinder with colored bands

A thin wire

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is direction important in an LED circuit?

LEDs work both ways

Electricity can only flow one way through an LED

It changes the color of the LED

It powers the resistor

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What tool is most helpful to build and test circuits easily in class?

Screwdriver

Hammer

Breadboard

Soldering iron

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