Announcement Next class: 10 min Quiz Material: Book Chapter 10

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Presentation transcript:

Announcement Next class: 10 min Quiz Material: Book Chapter 10 Circuits (covered in class examples)

Objectives Discuss FE exam Continue with Fundamentals of Electric Circuits

Fundamentals of Engineering (FE) Exam The FE exam is the step in the process to becoming a professional licensed engineer (P.E.) https://ncees.org/engineering/fe/ General FE exam: Section 14. Electricity, Power, and Magnetism: A. Electrical fundamentals (e.g., charge, current, voltage, resistance, power, energy) B. Current and voltage laws (Kirchhoff, Ohm) C. DC circuits D. Equivalent circuits (series, parallel, Norton’s theorem, Thevenin’s theorem) E. Capacitance and inductance F. AC circuits (e.g., real and imaginary components, complex numbers, power factor, reactance and impedance) G. Measuring devices (e.g., voltmeter, ammeter, wattmeter

FE Example: If R1 =R2=R3=R4 = 10Ω and R = 20 Ω, what is the equivalent resistor of the circuit?

Example Solution Req =(1/R2+ 1/R3)-1 + R4 + R R eg =(1/10+1/10)-1 + 10 +20 = 35Ω

More Complex Problem Use Ohm’s Law for Ix …… Answer: 5V, 1A After t = 5t, the capacitor acts like an open circuit Use Ohm’s Law for Ix …… Answer: 5V, 1A