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Current & Ohms Law 03 2000
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7. Current shown Graphically!! Conductor Given Point 0 1 second Second Timer 1 Coulomb Rate of Electron flow ( CURRENT ) is 1 coulomb per second ( 1 AMPERE ) I = 1C/s = 1 ampere 1 Coulomb moved . . 6.24 x 10 18 electrons
8. Speed up Electron Flow Graphically!! Conductor Given Point Second Timer 1 Coulomb Rate of Electron flow ( CURRENT ) is 1 coulomb per 1/2 second ( 2 AMPERES ) I = 1C/.5s = 2 amperes 1 Coulomb moved . . 0 .5 second 6.24 x 10 18 electrons
9. 24V DC 24V DC For current to be present in a circuit . . . AC Ammeter Voltage Source and a Complete Path + -
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14. 1A 10V Ohm’s Law states that . . The current is directly proportional to the voltage and indirectly proportional to the resistance . 10 20 10 2A 20V 1A .25A .5A 1A 5V 10V Voltage UP Current UP Resistance UP Current DOWN Voltage DOWN Current DOWN Resistance DOWN Current UP Voltage UP Current UP + -
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18. Ohm’s Law in Action (I)! 2A 10 20V A. I = E / R = 20 / 10 = 2A Q. What is the current through the resistor? + -
19. Ohm’s Law in Action (V) ! 2.8A 5 14V Ans. E = IR = 2.8 x 5 = 14V Q. What is the voltage across the resistor? + -
20. Ohm’s Law in Action ( ) ! .1A 240 24V Ans. R = E/I = 24 ÷ .1 = 240 Q. What is the resistance of the resistor? + -
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23. The End ivan.tandberg@shaw.ca Ph 1-403-361-0703 Silver Sage I = E R
![Basic Electricity ,[object Object],E-mail [email_address] Consulting](https://image.slidesharecdn.com/current-ohms-law-03-2000-22329/85/Current-Ohms-Law-03-2000-1-320.jpg)
![Meaning of Current!! ,[object Object],[object Object],[object Object],[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)