3

Volts

A battery is a device that stores chemical energy and converts it to electrical energy. The chemical reactions in a battery involve the flow of electrons from one material (electrode) to another, through an external circuit. The flow of electrons provides an electric current that can be used to do work.

THE BATTERY

1.8 - 3.3

Volts

A light-emitting diode (LED) is a semiconductor device that emits light when an electric current flows through it. LEDs have positive (+) and negative (-) sides to them. For an LED to work it needs to be connected to a voltage source with the correct side.

THE LED

An LED circuit requires three basic elements. The light, the wires that create a loop, and a battery. 

A switch can also be added to allow you to open and close the circuit, turning on and off the light. 

+

-

a switch is an electrical drawbridge when the bridge is up the electrons can't go anywhere

the Light Emitting Diode [LED] will provide our light

the battery holds the electrons

LED CIRCUIT BASICS

A switch is an electrical component that can disconnect or connect the conducting path in an electrical circuit. Interrupting the electric current turns the LED off, connecting the current turns it on. 

THE SWITCH

Securing the wires to the switch

Attach the metal ends of wires through holes of switch prongs

Secure each side with tape - make sure the wires aren't touching each other!

LEDs

switch

wires

batteries

LED

switch

battery

BUILDING A SIMPLE CIRCUIT