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 It is the push or pressure behind current flow through a circuit, and is measured in (V) volts.

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Presentation on theme: " It is the push or pressure behind current flow through a circuit, and is measured in (V) volts."— Presentation transcript:

1  It is the push or pressure behind current flow through a circuit, and is measured in (V) volts.

2  Current refers to the quantity/volume of electrical flow. Measured in Amps (A)

3  Resistance to the flow of the current. Measured in Ohms

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5  1. Assuming the resistance does not change: As voltage increases, current increases. as voltage decreases, current decreases.  2. Assuming the voltage does not change:  As resistance increases, current decreases.  As resistance decreases, current increases.

6  Studied the relationship between voltage, current, and resistance.

7  Ohm’s Law explains the relationship between voltage (V or E), current (I) and resistance (R)  Used by electricians, automotive technicians, stereo installers

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9  V = I x R  I = V R R = V I

10  A circuit has a current of 12 amps and a resistance Of 5 Ohms. What is the voltage? 12 x5 = 60 V

11  Battery voltage is 12V  Resistance 2 Ohm  What is the current?  12 / 2 = 6 amps

12  Voltage is 12V  Current is 4 Amps  What is the resistance?  12 / 4 = 3 ohms

13  What is Voltage?  What is Current?  What is Resistance? http://www.youtube.com/watch?v=nj7ewZmG3 eo&feature=related

14  Series circuit :  One pathway for current to flow.  Example: Old Christmas lights

15  More then one path way for current to flow.  Used in most electrical vehicle circuits.

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