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Transcript 
Electricity &
Magnetism
•FE Reivew
Overview
Reference Handbook – pg. 193-195
Topics on FE exam:
o Charge, energy, current, voltage, power, work
o Current and voltage laws (Kirchhoff, Ohm)
o Equivalent circuits (series, parallel, Thevenin)
o Capacitance and inductance, resistance and
impedance, and admittance
o AC circuits and basic complex algebra
Electrostatic Force
Electrostatic Fields
Magnetic Fields
Fluids Analogy
Symbol
Circuit Element
Fluids Analogy
Resistor
Reduced Diameter/
Porous Material
Capacitor
Pressure Tank
Inductor
Free Spinning Auger
Voltage Source
Pump (Pressure)
Current Source
Fluid Flow Rate
Fluid Mechanics Analogy
Resistor (Porous Ceramic)
Resistor
Ceramic Water Filter
(Ohms)
Resistivity (Porous Ceramic)
(Ohms)
Resistor Equivalent
Resistor Equivalent (cont.)
Capacitor
Capacitor
Pressure Tank
•Similar to a pressure tank, in that the capacitor stores charge
while the tank stores pressure.
•Equation: C = Q/V
i = C*dv/dt
Inductor
Free Spinning Auger
Inductor
•The inductor stores energy in a magnetic field, while the
spinning auger stores rotational kinetic energy.
•Equations:
Voltage
Battery (DC)
Water Pump
Voltage by analogy is similar to a pressure
difference across a pump.
Voltage Sources
V
v(t)
Examples:
V1=3V
v(t) = 2 cos (3t)
Current
Similar to Flowrate in pipe.
Current Sources
I
i(t)
Examples:
I=3A
i(t) = 4 cos (800 π t)
Energy (Work)
Power Definition
Fundamental Relationships
Thevenin Equivalent
Kirchhoff Voltage
Law
Kirchhoff Current
Law
Circuit Solution
Techniques
Circuit Solution
Techniques
Examples
FE Type Example Problems
Example #1: Charge
Example #1
(Solution)
Notes:
Example #2: Resistance
Example #2:
(Solution)
Notes:
Example #3: Resistance
Example #3:
(Solution)
Example #4: Capacitance
Example #4: (Solution)
Example #5: Circuit
Example #5: Circuit (Solution)
Example #6: Circuit
Example #6:
(Solution)
Example #7: Thevenin Equivalent
Example #7:
(Solution)
Example #8: Circuit Switch
Example #8: (Solution)
Example #9: Phasor Expression
Example #9: Impedance (Solution)
Example #10: Circuit
Example #10
Solution
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