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Circuits Intro

Published on Mar 07, 2016

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PRESENTATION OUTLINE

Electromagnetism

By: Mrs. Lowery
Photo by Pete Prodoehl

Electrons

Have a negative charge
Photo by TonZ

Static Electricity

Electrons building up
Photo by njorthr

Electricity

Electrons moving in a path

circuit = man-made path

Batteries

  • Have positive and negative ends, called terminals
  • Electrons are forced out of the negative side and attracted to the positive side
Photo by James Almond

In a series circuit, electrons go from minus to plus following the same path

Photo by Tyler Daviaux

Parallel circuits provide multiple paths for the electrons

circuit Diagrams

  • Wire?
  • Battery?
  • Light bulb?
  • Switch?
  • Resistor?
Photo by matthewvenn

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Photo by kjarrett

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Photo by AO'D

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Photo by Milo Bauman

Components

  • Power source, V (volts)
  • Current, i (amps)
  • Resistance, R (ohms)
  • Ohm's law: V=iR

Magnetism

Magnets are metals with atoms arranged in a way to make a magnetic field with a north and south pole.

Earth is a magnet

Magnets can be natural or man-made. The first people to use magnets were the Greeks and they used them for navigation.

Photo by Mick Haupt

Magnetic Fields

Photo by oskay

Electricity causes magnetism and magnetism can generate electricity.

Photo by Michiel2005

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Electromagnetic Spectrum

Photo by Allen Gathman