Electricity

Electricity cont.

Figure 1. Composition of Matter

Electron Theory of Electricity

Conductors and Insulators.

Safety Requirements

Figure 4. Insulators

Electrical Fires.

First Aid for Electric Shock.

Voltage, Current, and Resistance

Amperage (Current) And Voltage.

Ohm's Law

Applying Ohm's Law.

Figure 5. Determining Resistance in a Basic Circuit.

Figure 6. Determining Voltage in A basic Circuit.

Figure 7. Ohm's Law TN Diagram Form.

Figure 8. Types Of Resistors.

Fixed and Variable Resistors

Standard Color Code System.

Table 1. Standard Color Code for Resistors

Standard Color Code System. - Continued - Od163380028

Standard Color Code System. - Continued - Od163380029

Conclusion - Od163380030

Task 2. Describe Series, Parallel and Series-Parallel Circuits, Compute And Measure Voltage

Series Circuits and Computing and Measuring Voltage

Graphical Analysis of the Basic Circuit

Figure 12. Basic Flashlight Schematic.

Figure 13. Three Variables in a Basic Circuit.

Figure 14. Volt- Ampere Characteristics.

Figure 15. Relation Between Current And Resistance.

Power

Figure 16. Graph of Power Related to Changing Voltage.

Power - Continued

Figure 17. Graph Of Power related to Changing Current.

Figure 18. Summary Of Basic Formulas

Series Circuits

Figure 19. Comparison Of Basic And Series Circuits

Resistance in a Series Circuit.

Current in a Series Circuit

Figure 22. Current In A Series Circuit.

Figure 23. Calculating Individual Voltage Drops In a Series Circuit.

Figure 24. Solving for Applied Voltage In a Series Circuit.

Power in a Series Circuit.

Figure 25. Solving For Total Power In a Series Circuit.

Summary of Characteristics.

Series Circuit Analysis.

Series Circuit Analysis. - Continued

Series Circuit Analysis. - Continued

Kirchhoff's Voltage Law.

Polarity of Voltage

Applications of Kirchhoff's Voltage Law.

Figure 28. Determining Unknown Voltage In a Series Circuit.

Figure 29. Correct Direction Of Assumed Current.

Figure 30. Incorrect Direction Of Assumed Current.

Figure 31. Aiding And Opposing Sources.

Figure 32. Solving For Circuit Current Using Kirchhoff's Voltage Current.

Circuit Terms and Characteristics

Figure 33. Reference Points In a Series Circuit

Open Circuit

Figure 36. Ground Used As A Conductor

Short Circuit.

Figure 38. Normal And Short Circuit Conditions.

Source Resistance.

Figure 40. Effect Of Internal Resistance.

Figure 41. Effect of Source Resistance On Power Output.

Power TransferAnd Efficiency.

Parallel Circuits

Figure 43. Voltage Comparison in A Parallel Circuit.

Figure 44. Example Problem Parallel circuit.

Current In a Parallel Circuit.

Figure 45. Analysis of Curent In Parallel Circuit.

Current in a Parallel Circuit - Continued - Od163380079

Figure 46. Current Behavior in a Parallel Circuits.

Current in a Parallel Circuit - Continued - Od163380081

Current in a Parallel Circuit - Continued - Od163380082

Figure 47. Circuit For Example Problem.

Resistance in a Parallel Circuit.

Resistance in a Parallel Circuit. - Continued - Od163380085

Figure 50. Example of Circuit With Unequal Parallel Resistors

Resistance in a Parallel Circuit. - Continued - Od163380087

Reciprocal Method.

Figure 51. Example Of Parallel Circuit With Unequal Branch Resitors

Product Over The Sum Method.

Figure 52. Parallel Circuit With Two Unequal Resistors.

Power in a Parallel Circuit. - Continued

Equivalent Circuits.

Rules for Parallel Circuits.

Series-Parallel Circuits

Figure 55. Redrawing A Simple parallel Circuit

Figure 56. Redrawing A Simple Series- Parallel Circuit.

Redrawing a Complex Circuit.

Figure 57. Redrawing A complex Circuit

Effects of Open and Short Circuits.

Figure 58. Series- Parallel Circuit With Opens

Figure 59. Series-Parallel With Shorts

Effects of Open and Short Circuits. - Continued

Batteries

Combining Cells

Figure 60. Pictorial and Schematic Views Of Series Connected Cells.

Series-Parallel-Connected Cells.

Conclusion - Od163380108

Practical Exercise 1. - Od163380109

Practical Exercise 1 cont. - Od163380110

Lesson 1. Practical Exercise- Answers - Od163380111

References - Od163380112

References cont.

Basic Electronics