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Published byRocco Hendry Modified about 1 year ago

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Circuit Notes:

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Series Circuits R1 = 10 ohms R2 = 20 ohms R3 = 30 ohms Vt = 30V 1. Fill all of the R values into the chart. SVIR R1 10 R2 20 R3 30 T

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Series Circuits R1 = 10 ohms R3 = 30 ohms R2 = 20 ohms Vt = 30V SVIR R1 10 R2 20 R3 30 T Calculate Rt 3.Plug in Vt 4. Calculate It

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Series Circuits R1 = 10 ohms R3 = 30 ohms Vt = 30V R2 = 20 ohms SVIR R R R T.560 In series circuits, I’s are all equal. 5.Plug in I’s 6.Calculate Voltage Drops Check to make sure they add up to Vt!

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Parallel Circuits R1 = 10 ohms R2 = 30 ohms R3 = 60 ohms Vt = 30V 1.Fill in R’s 2. Calculate Rt remember to calculate the reciprocals! PVIR R1 20 R2 30 R3 60 T10

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Parallel Circuits 1/Rt = 1/R1 + 1/R2 + 1/R3 1/Rt = 1/20 + 1/30 + 1/60 1/Rt = 3/60 + 2/60 + 1/60 = 6/60 Rt = 60/6 = 10 ohms!

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Parallel Circuits R1 = 20 ohms R2 = 30 ohms R3 = 60 ohms Vt = 30V PVIR R1 20 R2 30 R3 60 T Plug in Vt 4. Calculate It (ohm’s Law!)

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Parallel Circuits R1 = 20 ohms R2 = 30 ohms R3 = 60 ohms Vt = 30V PVIR R R R T In a parallel circuit, all V’s are equal! 5.Fill in V’s. 6.Calculate I’s Check to make sure they add up to It!

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Combination Circuits R1 = 10 ohms R4 = 40 ohms Vt = 120V R2 = 20 ohms R3 = 20 ohms 1.Find the resistor farthest from the power source. Determine if it is Parallel or series. If it is parallel: 2.Set up a parallel box. 3.Calculate Rp (remember reciprocals!) PVIR R3 20 R2 20 Rp 10

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Combination Circuits PVIR R3 20 R2 20 Rp 10 R1 = 10 ohms R4 = 40 ohms Vt = 120V R2 = 20 ohms R3 = 20 ohms Find series resistiors. 4.Set up Series box. 5. Calculate Rt. SVIR R1 10 Rp 10 R4 40 T60 Effective Circuit: Parallel resistors combined act as a single series resistor

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Combination Circuits SVIR R Rp R T R1 = 10 ohms R4 = 40 ohms R2 = 20 ohms R3 = 20 ohms Vt = 120V PVIR R3 20 R2 20 Rp 10 6.Plug in Vt. 7.Calculate It Series I’s are the same! 8. Plug in I’s 9. Calculate V’s

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Combination Circuits SVIR R Rp R T R1 = 10 ohms R4 = 40 ohms R2 = 20 ohms R3 = 20 ohms PVIR R3 201 R2 201 Rp Substitute the Rp row into the Parallel box. V’s are equal in a parallel circuit. 11.Plug in V’s 12.Calculate I’s Your done!

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