1. Electric Magnitudes Technology Department I.E.S. El Batn,
Mieres 2009
2. Electric Magnitudes 3. Electric Magnitudes 4. Electric
Magnitudes 5. Electric Magnitudes 6. Electric Magnitudes 7.
Electric Magnitudes 8. Electric Magnitudes 9. Electric Magnitudes
10. Electric Magnitudes 11. Electric Magnitudes 12. Electric
Magnitudes 13. Electric Magnitudes 14. Electric Magnitudes 15.
Electric Magnitudes 16. Electric Magnitudes 17. Electric Magnitudes
18. Electric Magnitudes 19. Electric Magnitudes 20. Electric
Laws
Ohm's Law
It establish the relationship between tension, intensity and
resistance.
V = I R
21. Electric Laws
Power Definition
It establish the obtaining of power P = V I
Using Ohm's Law P = I I R = I 2 R
22. Electric Laws
Energy
It establish the obtaining of energy, multiplying power by time
(in seconds) E = P t
Using Ohm's Law E = I 2 R t
23. Kilowatt hour
Energy's Unit
1 kW = 1000 W
1 hour = 3600 s
1 kWh = 1000 W 3600 s = 3 600 000 Ws = = 3 600 000 J
