2.1 - Electricity

If you miss this class:

• both of these playlists are excellent and I can't decide which you should watch:  Playlist 1  |  Playlist 2

  • Just watch enough to understand Voltage, Amperage, Wattage and how they interact

The Goal

• To understand the basics of electricity: Voltage, Current, Wattage
  Keep in mind, we will cover this information in a simple manner, enough for our purposes

Review

• Atoms make up the world. They have negatively charged electrons which can jump from atom to atom (called valence electrons).

  • When these electrons jump or move, they change the charge of each atom

• Electricity is the flow of electrons (actually, it's the flow of any charge: positive or negative)

• Opposites attract (creating a force) and opposites repel (also creating a force)

  • Remember that word for later - force

The Plan

• Watch - Watch is electricity?

• One Amp (A) represents approx. 6,241,509,074,460,762,607 electrons (a Coulomb) passing a point in one second

  • 1 A = 1 C/s

  • Amperage, also called current is the availability of electrons - how many electrons are moving

• One Volt (V) represents the electrical potential between two points. It is the force or pressure pushing the electrons (similar, but not exactly like water pressure)

• Volts x Amps = Power (Watts)

Your Task

• Head over to Hapara and complete the 2.1 - Electricity task.

Extra

• How would you write one Coulomb in Scientific Notation?