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Series and Parallel Circuits. Circuits IIn order for electricity to flow we need PPower source CClosed circuit TThere are two type of circuits.

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Presentation on theme: "Series and Parallel Circuits. Circuits IIn order for electricity to flow we need PPower source CClosed circuit TThere are two type of circuits."— Presentation transcript:

1 Series and Parallel Circuits

2 Circuits IIn order for electricity to flow we need PPower source CClosed circuit TThere are two type of circuits we will explore SSeries circuit PParallel circuit

3 Series Circuit IIn a series circuit there is only one path for the electrons to flow IIn other words all the components are in series with each other BBecause there is only one path each charge will go through each resistor

4 Predict, Test and Explain How will the brightness of the bulbs change as we add more in series? What does this imply about the current in the circuit? + + +

5 Parallel Circuit IIn a Parallel circuit there are multiple pathways for charge to flow EEach device is placed on it’s own separate branch CCurrent goes through each of the branches at the same time

6 How will the brightness of the bulbs change as we add more in parallel? What does this imply about the current in the circuit? Predict, Test and Explain + ++

7 Key Concepts BBulbs in series represent a source of resistance to current flow, similar to boulders in a stream which can block the flow of water BBulbs in parallel offer additional pathways for current flow, similar to branches of a stream which can carry more water.

8 Calculating Resistance in Series Circuits TThe rule for calculating Series Circuits is to… AAdd up the values of each individual in the series. RR1 + R2 + R3… 5 220 Ω (ohms)

9 AAdd up the values of each individual in the series. RR1 + R2 + R3… 1 440 Ω (ohms) 10 20

10 Calculating Resistance in Series Circuits TThe rule for calculating Series Circuits is to… AAdd up the values of each individual in the series. 1 = Rt R1 R2 R3 1 = Rt 11 -- = Rt 11 -- = 1 Rt 11 -- = 1 Rt 20 11 -- = 1 Rt 11 -- = Rt 1  Rt = 1 Ω (ohms)

11 Calculating Resistance in Series Circuits The rule for calculating Series Circuits is to… Add up the values of each individual in the series = Rt R1 R2 R = Rt = Rt 1 -- =.016 Rt 1 -- =.016 Rt = Rt.016 Rt = 62.5 Ω (ohms)


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