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Chapter 6

Chapter 6. Series Circuits. Objectives. Determine the total resistance of a series circuit. Determine the voltage drops in a series circuit. Determine the current values of a series circuit. Determine the wattage values of a series circuit. Objectives.

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Chapter 6

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  1. Chapter 6 Series Circuits

  2. Objectives • Determine the total resistance of a series circuit. • Determine the voltage drops in a series circuit. • Determine the current values of a series circuit. • Determine the wattage values of a series circuit. Permission granted to reproduce for educational use only.

  3. Objectives • Apply Ohm’s law to solve for unknown voltage, current, and resistance in a series circuit. • Apply series circuit theory to assist in troubleshooting a series circuit. Permission granted to reproduce for educational use only.

  4. Series Circuit Principles • ET = E1 + E2 + E3…+ EN • RT= R1+ R2 + R3…+ RN • IT = I1 = I2 = I3…= IN Permission granted to reproduce for educational use only.

  5. Voltage in a Series Circuit • Kirchhoff’s voltage law • ET = E1+ E2 + E3…+ EN Permission granted to reproduce for educational use only.

  6. Current in a Series Circuit • IT = I1= I2= I3…= IN Permission granted to reproduce for educational use only.

  7. Resistance in a Series Circuit • RT = R1+ R2 + R3…+ RN Permission granted to reproduce for educational use only.

  8. Determining an Unknown Voltage Permission granted to reproduce for educational use only.

  9. Power in a Series Circuit • PT = ET× IT Permission granted to reproduce for educational use only.

  10. Review What does the source voltage of a series circuit equal? The total value of each individual voltage drop Permission granted to reproduce for educational use only.

  11. Review What does the source current of a series circuit equal? The same current value as any point in the circuit Permission granted to reproduce for educational use only.

  12. Review What does the total resistance in a series circuit equal? The total circuit resistance combined Permission granted to reproduce for educational use only.

  13. Review How do you determine power in a series circuit? Total voltage times total current Permission granted to reproduce for educational use only.

  14. Applying Ohm’s Law to a Series Circuit • R1 = 10 Ω Permission granted to reproduce for educational use only.

  15. Airfield Lighting System • When lights go out, amount of voltage changes to keep other lamps burning at same brightness Permission granted to reproduce for educational use only.

  16. Troubleshooting a Series Circuit Using a Voltmeter • Common circuit faults • Bad battery • Open switch • Blown fuse • Short circuit Permission granted to reproduce for educational use only.

  17. Steps in Troubleshooting • Make sure switch is closed • Determine if voltage exists at supply • Take voltage drop reading across fuse • Check voltage across switch • Check voltage across each resistor Permission granted to reproduce for educational use only.

  18. Review What is the formula used to determine total resistance when total voltage and current are known? RT = ET / IT Permission granted to reproduce for educational use only.

  19. Review What is the most common circuit fault in a series circuit? An open Permission granted to reproduce for educational use only.

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