Series and Parallel Circuits Series circuit: Current is the same in all elements (voltages add) Parallel circuit: Voltage is the same in all elements (Currents add)

US Electrical power Look at the text, which Shows an interesting Distinction between Utility producers and Non-utility producers In terms of this mix. (p 319) see for Information on actual energy consumed by fuel type.

US Electrical Power Generation

North American Power Plants Another interesting site: will give you more info on thesehttp://carma.org/ Plants (and indeed 50,0000 others worldwide!).

US Electrical power

Possible topics for last 2 weeks (votes on first day of class) Global warming (class discussion). Nuclear Power (fission/fusion) (24) Hydrogen economy (Fuel Cells) 22) Fuel Cells (11) Unconventional Fossil (9) Increasing efficiency; appliances, lights, etc. Electrical Grid

Faraday’s Law “A coil of wire experiences an electro- motive force that is proportional to the rate of change of the magnetic flux passing through the loop.” Magnetic flux is the product of the magnetic field strength times the area it passes through projected onto the field direction (just like solar flux on a panel). A perp B

Typical generating station Web site also has a good schematic of a generator in action

Typical Steam generator

U. Cincy Cogeneration Plant Annually produces: 245M kWh Heat to 9Msq.ft of bldg space

Combined Cycle plants

Combined cycle/Carbon sequestration plant

Electrical distribution/transmission

Transmission/distribution lines Some High Voltage transmission lines are DC not AC (see right), but they look pretty much the same.

Blackout before and after

Wind Turbines

Wind Energy An extensive site for Wind Information!!

Basics of a Wind Turbine

Web site for movie on wind turbine construction

Altamont Pass (CA) turbines, built 1980’s

San Gorgonio Pass (CA) turbines, built 1980’s

ITAIPU (Brazil/Paraguay)

Three Gorges Dam (China)

ITAIPU (Brazil/Paraguay)