1. Alternating Current Versus Direct Current By George Sereika

2. DC Current Direct current is the one way flow of electrical charge from a positive to a negative charge. Direct current is the one way flow of electrical charge from a positive to a negative charge. Direct current electrical charge Direct current electrical charge Batteries produce direct current. Batteries produce direct current. Batteries Direct Current is different than alternating current because the charge only flows in one direction. Direct Current is different than alternating current because the charge only flows in one direction. Thomas Edison is credited for promoting direct current. Thomas Edison is credited for promoting direct current. Thomas Edison Thomas Edison

3. DC Examples http://www.school-for- champions.com/science/dc.htm http://www.school-for- champions.com/science/dc.htm http://www.school-for- champions.com/science/dc.htm http://www.school-for- champions.com/science/dc.htm DC Motor DC Motor DC Motor DC Motor

4. Alternating Current Alternating Current is when charges flow back and forth from a source. Alternating Current is when charges flow back and forth from a source.source It is the way we receive our electricity (for our houses, businesses, etc.) It is the way we receive our electricity (for our houses, businesses, etc.)houses Nikola Tesla was a pioneer in the advancement of alternating current. Nikola Tesla was a pioneer in the advancement of alternating current. Nikola Tesla Nikola Tesla AC flows in the form of a sine wave, back and forth. AC flows in the form of a sine wave, back and forth.sine wavesine wave It is easier to transform voltages in AC. It is easier to transform voltages in AC. The purpose of transformers is to convert AC voltages. The purpose of transformers is to convert AC voltages.transformers Transformers are extremely important to AC current, and our life. Transformers are extremely important to AC current, and our life.

5. AC Examples http://www.school-for- champions.com/science/ac.htm http://www.school-for- champions.com/science/ac.htm http://www.school-for- champions.com/science/ac.htm http://www.school-for- champions.com/science/ac.htm how transformers work how transformers work how transformers work how transformers work Comparing AC vs. DC Comparing AC vs. DC Comparing AC vs. DC Comparing AC vs. DC

6. Sources http://www.youtube.com/watch?v=JZjMuI HoBeg http://www.youtube.com/watch?v=JZjMuI HoBeg http://www.youtube.com/watch?v=JZjMuI HoBeg http://www.youtube.com/watch?v=JZjMuI HoBeg http://en.wikipedia.org/wiki/Transformer http://en.wikipedia.org/wiki/Transformer http://en.wikipedia.org/wiki/Transformer http://engineering.wikia.com/wiki/Alternati ng_current http://engineering.wikia.com/wiki/Alternati ng_current