{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

AP1200_Ch5_Electricity-1ChargeForceField-2008

AP1200_Ch5_Electricity-1ChargeForceField-2008 - Electricity...

Info icon This preview shows pages 1–16. Sign up to view the full content.

View Full Document Right Arrow Icon
Electricity Lecture 1
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
2 Learning Objectives You should become able to: describe the properties of electric charge,  force, field, energy & currents relate electrical current, potential, resistance  and power 8
Image of page 2
3 Reading and Research Reading and Research Consult our lecture notes, and the recommended textbooks You will find many learning tools, including Java applets  (interactive on-line demonstrations), at: http://www.merlot.org/  at top right, enter search keywords (e.g. optics) http://hyperphysics.phy- astr.gsu.edu/hbase/electric/ecircon.html#c1 contains many useful explanations and illustrations  about electricity Youtube.com 7
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
4 Warning:   Warning:  Copyright Most of the images shown here were  downloaded from the web, without asking  owners/authors: The owners/authors included no ban on use Copyright must still be respected: The images can be used for educational purposes  only; we/you may not make money with them 8
Image of page 4
5 Electrical Energy Our modern world revolves around the need for  electric energy: Watch TV Use mobile phone/computer Switch on the lights/air conditioning Take MTR... Can you imagine modern life without  electricity? 6
Image of page 5

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
6 Uses of Electricity: Lighting electric street lighting 19 th century laser show first electric light bulb - Edison 9
Image of page 6
7 Use of Electricity: Mechanical  Power Shanghai Maglev electric motor - C.G. Page 1850s 8
Image of page 7

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
8 Uses of Electricity: Refrigeration,  Heating electric refrigerator underfloor heating 5
Image of page 8
9 Uses of Electricity:  Telecommunications telegraph telephone internet 6
Image of page 9

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
10 radiotelephone radio/television 7 Uses of Electricity: Electronics
Image of page 10
11 Uses of Electricity: Computers Earth Simulator (5120 processors) ~ 2004 ENIAC computer ~1946 A Boeing 777 airplane contains ~ 1000 computers 8
Image of page 11

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
12 Nature of Electricity Early observation of electricity a. When amber (fossilized resin from  trees) is rubbed with a cloth, it can  attract nearby bits of straw or grain. b. A light-releasing phenomenon  caused by charged solar particles  following the earth’s magnetic lines of  force a. Amber 6 b. Aurora 
Image of page 12
13 Nature of Electricity What is electricity? Electricity is the  flow and  accumulation of  electric charges: electrons, protons  and any “carriers”  of charge (e.g. ions  in lightning and  batteries) lightning 9
Image of page 13

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
14 Convenience of Electricity Why is electricity so useful? Compare with using water in  pipes for the same purposes e.g. microfluidics Electricity acts extremely fast: signals in metals travel at  ~2/3 speed of light in  vacuum Electrical conductors are easy  to find and shape metals (semiconductors are  less easy to make) 8
Image of page 14
15 Inconvenience of Electricity Drawbacks of electricity: storage difficult: 
Image of page 15

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 16
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern