HouseholdElectricityOpt

# HouseholdElectricityOpt - 100soffreepptsfrom...

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Chapter 5 Using Electricity in the Home 100’s of free ppt’s from  www.pptpoint.com  library

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Work = force (Newtons) X distance (m) In order to do work a force must  move  through a distance.  Kinetic energy involves movement or use Potential energy means that it can be used On Earth we can convert our weight in  kilograms  to Newtons by multiplying by 10      i.e. . One kilogram becomes 10 N
Energy = Voltage X Current X  time The units for energy are joules (J) Power = energy / time Power = Voltage (v)  X Current (I)

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House Hold Energy  Consumption Hydro bills are established by finding  out how many kilowatt hours of  electricity your household has used in a  given time. 1 kWh = kilowatts X time (hours) 1 kWh = 1 000 Watts X 1 hour 1 kWh = 1 000 W X 3 600 seconds
Reading the Meter – always  use the smallest number

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Efficiency This is a comparison of the amount of  energy obtained as compared to the  amount of energy put into the system Efficiency = energy output / energy input To convert it to a percentage just multiply  the answer by 100 %

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House Hold Wiring The wires coming into a house include a black, a  red and a white. The
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## This note was uploaded on 11/17/2011 for the course PHYS 121 taught by Professor Burgeson during the Fall '11 term at BYU.

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HouseholdElectricityOpt - 100soffreepptsfrom...

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