xc.  Ohm’s Law explains the relationship between voltage (V or E), current (I) and resistance (R)  Used by.

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Presentation transcript:

xc

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

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

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

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

 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.

 What is Voltage?  What is Current?  What is Resistance?

 n5Y&feature=related n5Y&feature=related  Stop at 1 Min mark

 V (E) = I x R  I = V R R = V I

 Battery voltage is 12V  Current is Amp ?  Resistance 2 Ohm

 Voltage is 12V  Current is 4 Amps  Resistance Ohms ?

Multi meters/ DVOM

 Why do we need resistors  To decrease the amount of voltage applied to a component  The value of the resistor is marked on the body using coloured rings

 What is Voltage?  What is Current?  What is Resistance? eo&feature=related

 w9SoU&feature=related w9SoU&feature=related

 What is a load  It is a any electric load on a circuit that does work.  Example: Power windows, light bulbs, motors.

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

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

12

 What is Voltage?  What is Current?  What is Resistance?  What are wiring diagrams?  What are the different circuits and there characteristics?