1. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction Glen Archer Room 730 EERC gearcher@mtu.edu 487-2789 Office Hours TBD By appointment

2. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction Chapter 1 Introduction 1.Recognize interrelationships of electrical engineering with other fields of engineering. 2. List the major subfields of electrical engineering. 3. List several important reasons for studying electrical engineering.

3. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction 4. Define current, voltage, and power, including their units. 5. Calculate power and energy, as well as determine whether energy is supplied or absorbed by a circuit element. 6. State and apply basic circuit laws. 7. Solve for currents, voltages, and powers in simple circuits.

4. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction Electrical systems have two main objectives: To gather, store, process, transport, and present information To distribute and convert energy between various forms

5. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction Electrical Engineering Subdivisions Communication systems Computer systems Control systems Electromagnetics Electronics Power systems Signal processing

6. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction Why Study Electrical Engineering? To pass the Fundamentals of Engineering (FE) Examination So you can lead design projects in your own field To be able to operate and maintain electrical systems To communicate with electrical engineering consultants

7. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

8. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction Electrical Current Electrical current is the time rate of flow of electrical charge through a conductor or circuit element. The units are amperes (A), which are equivalent to coulombs per second (C/s).

9. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction Electrical Current

10. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

11. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

12. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction Direct Current Alternating Current When a current is constant with time, we say that we have direct current, abbreviated as dc. On the other hand, a current that varies with time, reversing direction periodically, is called alternating current, abbreviated as ac.

13. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction.

14. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

15. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

16. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction Voltages The voltage associated with a circuit element is the energy transferred per unit of charge that flows through the element. The units of voltage are volts (V), which are equivalent to joules per coulomb (J/C).

17. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

18. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

19. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

20. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction POWER AND ENERGY

21. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

22. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

23. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction KIRCHHOFF’S CURRENT LAW The net current entering a node is zero. Alternatively, the sum of the currents entering a node equals the sum of the currents leaving a node.

24. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

25. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

26. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

27. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction KIRCHHOFF’S VOLTAGE LAW The algebraic sum of the voltages equals zero for any closed path (loop) in an electrical circuit.

28. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

29. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

30. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

31. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

32. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

33. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

34. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

35. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

36. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

37. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

38. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction Resistors and Ohm’s Law a b

39. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction Conductance

40. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction Resistance Related to Physical Parameters

41. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

42. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

43. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction

44. ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction