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electricity

Published on Nov 07, 2016

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PRESENTATION OUTLINE

DESCRIBE ELECTRICITY USING SIMILES

DESCRIBE VOLTAGE, RESISTANCE, CURRENT, WIRE, ELECTRONS, WITH LIKE AND AS

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MULTIMETER

OK, NOT SO USEFUL. TRY AGAIN...
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Photo by illustir

Resistance - Ohms

Photo by Supernico26

CURRENT - AMPERES

Volts - Pressure

Photo by Macomb Paynes

"A neat analogy to help understand these terms is a system of plumbing pipes. The voltage is equivalent to the water pressure, the current is equivalent to the flow rate, and the resistance is like the pipe size."

"What are amps, watts, volts and ohms?" 31 October 2000. HowStuffWorks.com. 5 December 2016

OHM'S LAW

Photo by adafruit

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Photo by adafruit

RESISTANCE

HOW DIFFICULT IT IS TO GET THROUGH
Photo by Bert Kaufmann

THINGS THAT CHANGE RESISTANCE

  • Wire width
  • Wire length
  • Temperature
  • Type of metal

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Which cave would be easier?

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WIRE WIDTH

WIDER = LESS RESISTANCE
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WHICH HOUSE WOULD BE EASIER TO RUN TO?

WHICH HOUSE WOULD BE EASIER TO RUN TO?

WIRE LENGTH

LONGER = MORE RESISTANCE

WHICH WOULD BE EASIER TO WALK THROUGH?

Photo by Doug Kline

WHICH WOULD BE EASIER TO WALK THROUGH?

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HIGHER TEMPERATURE = MORE RESISTANCE

Photo by colemama

TYPES OF METALS ALSO IMPACT RESISTANCE

METAL IN POP CANS IS DIFFERENT FROM METAL IN WIRE
Photo by typicalgenius

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Photo by @DrGarcia

SERIES CIRCUIT

ONE GOES OUT, THEY ALL GO OUT - BUT A LOT LESS WIRE!
Photo by practicalowl

PARALLEL CIRCUIT

ONE GOES OUT, THEY STAY ON! BUT... LOTS MORE WIRE

DESCRIBE ELECTRICITY USING SIMILES

DESCRIBE VOLTAGE, RESISTANCE, CURRENT, WIRE, ELECTRONS, WITH LIKE AND AS