Lecture # 1
Chapter 1
Principles of Electric
Circuit
207 MDE
2010/2011 - 1431/1432
Spring 312
Tarek Elsarnagawy
Prof. assoc. Dr. Ing.
Tel.:: 4735277 – 497 or 516
Tel
Office hours: see time table
Email: telsar@ksu.edu.sa
htt //f
http://faculty.ksu.edu.sa/elsarnagawy/default.aspx
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Principles of Electric Circuits, Conventional Flow, 9th ed.
© Spring 2011
Elsarnagawy
Chapter 1
Textbook
Principles of Electric Circuits: Conventional
• Current
C
tV
Version,
i
9/E
Thomas L. Floyd
•
•
ISBN-10: 013507309X
ISBN-13: 9780135073094
P bli h
Publisher:
P
Prentice
i H
Hallll
Copyright: 2010
Format: Cloth; 992 pp
Published: 03/05/2009
•
Boylestad, Introductory Circuit Analysis, 12/e
Principles of Electric Circuits, Conventional Flow, 9th ed.
© Spring 2011
Elsarnagawy
Chapter 1
Evaluation and assessment
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Assignments
Seminars/oral
Quizzes
Practical
Lab exam
Mid term 1,2
12
Final
Principles of Electric Circuits, Conventional Flow, 9th ed.
5%
5%
5%
20%
10%
15%
40%
© Spring 2011
Elsarnagawy
Chapter 1
Course Syllabus
Principles of Electric Circuits, Conventional Flow, 9th ed.
© WS 2010 -Elsarnagawy
Chapter 1
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207 MASH, 312
Course Syllabus
Chapter 1: Quantities and Units
1-1 Units of Measurement
1-2 Scientific Notation
1-3 Engineering Notation and Metric
Prefixes
1-4 Metric Unit Conversions
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Chapter 2: Voltage,
Voltage Current,
Current and
Resistance
2-1
Atomic Structure
2-2
Electrical Charge
2-3
Voltage, Current, and Resistance
2-4
Voltage and Current Sources
2-5
Resistors
2-6
The Electric Circuit
2-7
Basic Circuit Measurements
2-8
Electrical Safety
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Chapter 3: Ohm’s Law
3-1 The Relationship of Current, Voltage,
and Resistance
3-2 Calculating Current
3-3 Calculating Voltage
3-4 Calculating Resistance
3-5 Introduction to Troubleshooting
g
A Circuit Application
Principles of Electric Circuits
MDE 207
Chapter 4: Energy and Power
4-1 Energy and Power
4-2 Power in an Electric Circuit
4-3 Resistor Power Ratings
4-4 Energy Conversion and Voltage
Drop in Resistance
4-5 Power Supplies
A Circuit Application
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Chapter 5 Series Circuits
5-1 Resistors in Series
5-2 Cu
Current
e in a Se
Series
es C
Circuit
cu
5-3 Total Series Resistance
5-4 Application of Ohm’s Law
5-5 Voltage Sources in Series
5-6 Kirchhoff’s Voltage Law
5-7 Voltage dividers
5-8 Power in Series Circuits
5-9 Voltage Measurements
5-10 Troubleshooting
A Circuit
Ci it Application
A li ti
5
Chapter 6 Parallel Circuits
6-1 Resistors in Parallel
6-2 Voltage in a Parallel Circuit
6 3 Kirchhoff
6-3
Kirchhoff’ss Current Law
6-4 Total Parallel Resistance
6-5 Application of Ohm’s Law
6-6 Current Sources in Parallel
6-7 Current Dividers
6-8 Power in Parallel Circuits
6-9 Parallel Circuit Applications
6-10 Troubleshooting
A Circuit Application
© Spring 2011 -Elsarnagawy
Chapter 1
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207 MASH, 312
Course Syllabus
Chapter 11 Introduction to Alternating
Current and Voltage
Voltage\\
11--1 The
11
Th Sinusoidal
Si
id l Waveform
W
f
11--2 Sinusoidal Voltage Sources
11
11--3 Sinusoidal Voltage and Current
11
Values
11--4 Angular Measurement of a Sine
11
Wave
11--5 The Sine Wave Formula
11
11--6 Introduction to Phasors
11
11--7 Analysis of AC Circuits
11
11--8 Superimposed DC and AC Voltages
11
11--9 Nonsinusoidal Waveforms
11
11--10 The Oscilloscope
11
A Ci
Circuit
it Application
A li ti
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Chapter 12 Capacitors
12--1 The Basic Capacitor
12
12--2 Types of Capacitors
12
12--3 Series Capacitors
12
12--4 Parallel Capacitors
12
12--5 Capa
12
Capacitors
o s in DC
C Circuits
C u s
12--6 Capacitors in AC Circuits
12
12--7 Capacitor Applications
12
12--8 Switched12
Switched-Capacitor Circuits
A Circuit Application
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Principles of Electric Circuits
MDE 207
6
Chapter 13 Inductors
13--1 The Basic Inductor
13
13--2 Types of Inductors
13
13--3 Series and Parallel Inductors
13
13--4 Inductors in DC Circuits
13
13--5 Inductors in AC Circuits
13
13--6 Inductor Applications
13
A Circuit Application
© Spring 2011 -Elsarnagawy
Chapter 1
Quantities and Units
Q
7
Principles of Electric Circuits, Conventional Flow,
9th
ed.
© WS 2010 -Elsarnagawy
8
Chapter 1
Quantities and Units
► 1-1
Units of Measurement
► 1-2 Scientific Notation
► 1-3 Engineering Notation and Metric Prefixes
► 1-4 Metric Unit Conversions
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
9
Chapter 1
International System of Units
“System International d’Unites”
SI Fundamental Units
Principles of Electric Circuits
MDE 207
Q
Quantity
i
Unit
i
Length
Mass
Time
Electric current
Temperature
Luminous intensity
Amount of substance
Meter
Kilogram
Second
Ampere
Kelvin
Candela
Mole
Symbol
b l
m
kg
s
A
K
cd
mol
© Spring 2011 -Elsarnagawy
10
Chapter 1
Some Important Electrical Units
Except for current, all electrical and magnetic
units
i are derived
d i d from
f
the
h ffundamental
d
l units.
i
Current is a fundamental unit.
Q
Quantity
i
Current
Charge
Voltage
Resistance
Power
Principles of Electric Circuits
MDE 207
U i
Unit
Ampere
Coulomb
Volt
Ohm
Watt
S
Symbol
b l
A
C
V
Ω
W
© Spring 2011 -Elsarnagawy
11
Chapter 1
Some Important Magnetic Units
All magnetic units are derived from the fundamental units.
Th
These
units
i are discussed
di
d in
i Chapter
Ch
10
10.
Quantity
Q
y
Magnetic field intensity
Magnetic
g
flux
Magnetic flux density
Magnetomotive force
Permeability
Reluctance
Principles of Electric Circuits
MDE 207
Symbol
y
Unit
H
φ
B
Fm
µ
R
Ampere-turns/meter
Weber
Tesla
Ampere-turn
Webers/ampere t rns meter
Webers/ampere-turns-meter
Ampere-turns/weber
Symbol
y
At/m
Wb
T
At
Wb/At.m
At/Wb
© Spring 2011 -Elsarnagawy
Chapter 1
ENGINEERING NOTATION
► Engineering
notation specifies that all
powers of ten must be 0 or multiples
p
p of 3,
and the tens unit must be greater than or
equal to 1 but less than 1000
1000..
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
Chapter 1
FIXED--POINT, FLOATINGFIXED
FLOATING-POINT, SCIENTIFIC, AND
ENGINEERING NOTATION
Prefixes
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
14
Chapter 1
Engineering Metric Prefixes
Can you
C
name the
prefixes and
their
g
meaning?
Principles of Electric Circuits
MDE 207
P
peta
1015
T
tera
1012
G
giga
109
M
mega
106
k
kilo
103
© Spring 2011 -Elsarnagawy
15
Chapter 1
Engineering Metric Prefixes
Can you
C
name the
prefixes and
their
g
meaning?
Principles of Electric Circuits
MDE 207
m
milli
10-3
µ
micro
10-66
n
nano
10-9
p
pico
10-12
f
femto
10-15
© Spring 2011 -Elsarnagawy
Chapter 1
Principles of Electric Circuits
MDE 207
SYMBOLS
© Spring 2011 -Elsarnagawy
17
Chapter 1
Scientific and Engineering Notation
Very large and very small numbers are
represented with scientific and engineering
notation.
47,000,000 = 4.7 x 107 (Scientific Notation)
= 47.
47 x 106 (Engineering Notation)
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
18
Chapter 1
Scientific and Engineering Notation
0.000 027 = 2.7 x 10-5 (Scientific Notation)
= 27 x 10-6 (Engineering Notation)
0 605 = 6.05
0.605
6 05 x 10-11 (Scientific Notation)
= 605 x 10-3 (Engineering Notation)
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
19
Chapter 1
Metric Conversions
When converting from a larger unit to a smaller unit,
move the decimal point to the right.
right Remember,
Remember a
smaller unit means the number must be larger.
Smaller unit
0.47 MΩ = 470 kΩ
Larger number
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
20
Chapter 1
M t i Conversions
Metric
C
i
When convertingg from a smaller unit to a larger
g unit,,
move the decimal point to the left. Remember, a larger
unit means the number must be smaller.
Larger unit
10,000 pF = 0.01 µF
Smaller number
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
21
Chapter 1
M t i Arithmetic
Metric
A ith ti
When addingg or subtractingg numbers with a metric
prefix, convert them to the same prefix first.
10,000 Ω + 22 kΩ =
10,000 Ω + 22,000 Ω = 32,000 Ω
Alternatively,
10 kΩ + 22 kΩ = 32 kΩ
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
22
Chapter 1
M t i Arithmetic
Metric
A ith ti
When addingg or subtractingg numbers with a metric
prefix, convert them to the same prefix first.
200 µΑ + 1.0 mA =
200 µA + 1,000 µA = 12,000 µA
Alternatively,
0 200 mΑ
0.200
Α + 1.0
1 0 mA
A = 1.2
1 2 mA
A
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
23
Chapter 1
Si ifi t Figures
Significant
Fi
Most work in electronics involves measurements,,
which always have error. You should report only digits
that are reasonably assumed to be accurate.
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
24
Chapter 1
Si ifi t Figures
Significant
Fi
Looking at the rule, decide how many significant figures
in each of the examples, which are given with a rule:
1. Nonzero digits are always considered to be significant. 152.71
2. Zeros to the left of the first nonzero digit are never
significant. 0.0938
3. Zeros between nonzero digits are always significant. 10.05
4. Zeros to the right of the decimal point for a decimal
number are never significant. 5.100
5. Zeros to the left of the decimal point with a whole number
may or may not be significant depending on the measurement.
5100.
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
25
Chapter 1
Quiz
1. A resistor is an example of
a. a passive component
b an active component
b.
c. an electrical circuit
d. all of the above
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
26
Chapter 1
Quiz
2. The electrical unit that is fundamental is the
a. volt
b ohm
b.
c. coulomb
d. ampere
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
27
Chapter 1
Quiz
3. In scientific notation, the number 0.000 56 is written
a. 5.6 x 104
b 5.6
b.
5 6 x 10-4
c. 56 x 10-5
d. 560 x 10-6
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
28
Chapter 1
Quiz
4. In engineering notation, the number 0.000 56 is written
a. 5.6 x 104
b 5.6
b.
5 6 x 10-4
c. 56 x 10-5
d. 560 x 10-6
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
29
Chapter 1
Quiz
5. The metric prefix nano means
a. 10-3
b 10-6
b.
c. 10-9
d. 10-12
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
30
Chapter 1
Quiz
6. The metric prefix pico means
a. 10-3
b 10-6
b.
c. 10-9
d. 10-12
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
31
Chapter 1
Quiz
7. The number 2700 MW can be written
a. 2.7 TW
b 2.7
b.
2 7 GW
c. 2.7 kW
d. 2.7 mW
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
32
Chapter 1
Quiz
8. The value 68 kΩ is equal to
a. 6.8 x 104 Ω
b 68,
b.
68 000 Ω
c. 0.068 MΩ
d. All of the above
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
33
Chapter 1
Quiz
9. The sum of 330 mW + 1.5 W is
a. 331.5 mW
b 3.35
b.
3 35 W
c. 1.533 W
d. 1.83 W
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
34
Chapter 1
Quiz
10. The quantity 200 µV is the same as
a. 0.000 200 V
b 20 mV
b.
c. 0.2 V
d. all of the above
Principles of Electric Circuits
MDE 207
© Spring 2011 -Elsarnagawy
35
Chapter 1
Quiz
Answers:
Principles of Electric Circuits
MDE 207
1. a
6. d
2 d
2.
7 b
7.
3. b
8. d
4. d
9. d
5. c
10. a
© Spring 2011 -Elsarnagawy