Presentacin de PowerPoint

Topic: Electricity and Batteries Name: Fabian Bajaa

Teacher: Lic. Ral PesantesPractical English 1Universidad Internacional del Ecuador

Electricity Electricity is associated with the presence and flow of electrons These electrons we can find in the matter

Matter Every piece of matter is made up of molecules and all molecules are made up of atoms.In any state of matter we have a lot of atoms

AtomsThe elements of Atoms are:Proton: PositiveElectron: NegativeNeutron: no charge

Electrical properties of materialsBasically we have three properties of materials:Conductor: to allows easily flow of electronsThe atoms contain free electrons in outer orbit

Gold, silver and cooper are good conductor

Semiconductor Semiconductors are materials that behave like conductors and insulators.The atom has 4 electrons in outer orbit

SILICION is a semiconductor

Insulators To resist the flows the electrons The atom has 5 to 8 electrons in outer orbit

Wood, plastic rubber are insulator

Current The current is flow of free electrons through the conductor Its unit for measuring is the AMPERS (A)We use the ammeter for measuring it

Volts Voltage is the electrical preassure that pushes the electrons through the conductor The unit the measuring is for VOLTAGE (V)

Resistance The resistance is the opposition to flows of electrons in a path. The unit the measuring is the OHM ()

Simple electrical circuit We have some things important: Power supply Condutor Load Switch

Circuit Faults OpenShort to ground High resistance

Battery or Accumulator A battery is a device that is able to store electrical energy in form of chemical energy, and convert that energy into electricity

There are 4 functions:Provides the electrical energy to start the carProvides electrical energy to ignition systemProvides electrical energy to accessories Voltage stabilizer

Battery Automotive batteries are usuallylead-acidtype It made of six cellsinseriesto provide a 12-voltsystem. Each cell provides 2.1 volts for a total of 12.6 volts at full charge.

Electrolyte The electrolyte is a chemical medium that allows the flow of electrical charge between the positive plate to negative plate Each cell are covered of electrolyteIt is made up 64% water 36 %sulfuric acid

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