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Chp . 20 Circuits : Series and Parallel

Chp . 20 Circuits : Series and Parallel. Schematic Diagrams of Circuits:. Symbols *Copy Table 20-1 page 731. Symbol Conventions for Circuits. Schematic map keys for electronic components. emf.

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Chp . 20 Circuits : Series and Parallel

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  1. Chp. 20 Circuits :Series and Parallel

  2. Schematic Diagrams of Circuits: Symbols *CopyTable 20-1 page 731

  3. Symbol Conventions for Circuits. • Schematic map keys for electronic components.

  4. emf • The source of potential difference and electrical energy is the circuit emf. (ie. Battery or outlet) • The emf is the energy per unit charge supplied by a source of electric current. (ie. Charge Pump) • The terminal voltage is actually slightly less than the emf. Unless otherwise stated , any reference in this book to potential difference across a battery should be thought of as the potential difference measured across the battery terminals. (ie. Potential difference across a load equals the terminal voltage.)

  5. Resistors in Series Circuits

  6. Resistors in Series • Page 737 Figure 20-11 Req=R1+ R2+ R3 … Equivalent resistance equals the total individual resistances in series *Example 20A page 738

  7. Resistors in Parallel Circuits

  8. Resistors in Parallel • Page 741-742 Fig. 20-14 1=1 + 1 + 1 ReqR1 R2 R3 Equivalent resistance of resistors in parallel can be calculated using a reciprocal relationship * Example 20B page 743

  9. Homework Chp. 20 Chp. 20 BK • 20A 1- 4 2. a. 24Ω b. 1A c. C.1A 4. a) 11.28 Ω =Req I= .798 A b) V= 5.79 V V= 3.22 V • 20B 1,3,4 4. a) 2.99Ω b)36V c)2A= I 6A=I3 Chp. 20 WKBK • 20A 1,2,4,5 1. 2000 kΩ 2. 4.1 x 108 Ω 4. V= 20000 V 5. R 12 =8.5 Ω R13 = 20.5 Ω R23 = 20 Ω • 20B 1,4 1. Req = 1.3 Ω 4. R= .1Ω

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