Last Updated  S012019 
BSC102C
Unit Name  Electrical Circuit Theory and Analysis 
Unit Code  BSC102C 
Unit Duration  1 Semester 
Award 
Bachelor of Science (Engineering) Duration 3 years 
Year Level  One 
Unit Creator / Reviewer  N/A 
Core/Elective:  Core 
Pre/Corequisites  Nil 
Credit Points 
3 Total Course Credit Points 81 (27 x 3) 
Mode of Delivery  Online or oncampus. 
Unit Workload  (Total student workload including “contact hours” = 10 hours per week; 5 hours per week for 24 week delivery) Prerecordings / Lecture – 1.5 hours Tutorial – 1.5 hours Guided labs / Group work / Assessments – 2 hours Personal Study recommended – 5 hours 
Unit Description and General Aims
The objective of this unit is to familiarise the students with the various elements of electrical circuits and the behaviour of circuits when connected to a power source. Information covered in this unit will include: the fundamentals of DC and AC circuits; the measurement of voltage, current, power, resistance; and, other basic electrical concepts. Additionally, the various circuit combinations, mathematical methods for resolving DC and AC circuits, calculations for AC circuits involving the use of complex numbers in Cartesian and polar forms, the use of various circuit theorems, the maximum power transfer theorem, and the basics of resonance and harmonics in complex waveforms, will also be discussed.
Learning Outcomes
On successful completion of this Unit, students are expected to be able to:
 Explain the different passive components found in electrical circuits and their behaviour.
Bloom’s Level 3  Perform calculations involving simple circuits in DC networks including the behaviour under sudden voltage change conditions.
Bloom’s Level 3  Explain the behaviour of passive components in AC circuits powered by single phase AC supply.
Bloom’s Level 3  Perform calculations in AC circuits using polar and Cartesian systems (involving complex numbers) and applying various circuit theorems to solve complex networks.
Bloom’s Level 3  Explain the analysis of complex waveforms and analyse the frequency components in commonly encountered nonsinusoidal waveforms using numerical methods.
Bloom’s Level 3  Discuss the principles of measurement of electrical parameters using electrical instruments, bridges, and applications of electromagnetism.
Bloom’s Level 3
Student assessment
Assessment Type  When assessed  Weighting (% of total unit marks)  Learning Outcomes Assessed 
Assessment 1 Type: Multichoice test / Group work / Short answer questions / Practical / Remote Lab / Simulation

After Topic 3  15%  1, 2 
Assessment 2  midsemester test Type: Multichoice test / Group work / Short answer questions / Practical / Remote Lab / Simulation Example Topic: Solving AC circuits using polar and Cartesian coordinate systems. Students may be asked to provide solutions to simple problems on various topics 
After Topic 7  20%  3 and 4 
Assessment 3 Type: Multichoice test / Group work / Short answer questions / Practical / Remote Lab / Simulation / Project / Report Example Topic: Perform electrical measurements on circuits using digital instruments such as oscilloscopes or simulate and analyse complex waveforms. 
After Topic 10  20%  6 
Assessment 4 Type: Examination An examination with a mix of descriptive questions and numerical problems to be completed within 3 hours. 
Final Week  40%  1 to 6 
Attendance / Tutorial Participation Example: Presentation, discussion, group work, exercises, selfassessment/reflection, case study analysis, application. 
Continuous  5%  1 to 6 
Prescribed and Recommended readings
Suggested Textbook
 Bird John, 2013, Electric Circuit Theory and Technology, Newnes (Elsevier Science), ISBN 9780415662864
Reference Materials
 Circuit Theory, 2013, wikibooks.org
(download link: http://upload.wikimedia.org/wikipedia/commons/f/f8/Circuit_Theory.pdf)  Peer reviewed Journals
 Knovel library: http://app.knovel.com
 IDC Technologies publications
 Other material and online collections as advised during the lectures
Unit Content
Topic 1
Electrical quantities, resistance in DC circuits
 Units of electrical measurements
 Electric charges, forces and fields
 Coulomb’s Law
 Electricity – electric field, potential, potential difference, and current
 Conductors and insulators
 Introduction to circuits and Ohm’s law
 Resistance and its variation with temperature
 Different types of resistances and their comparison
 Solving combinations of series and parallel circuits
 Kirchhoff’s Law and its application in DC circuits
 Voltage and current division in series/parallel circuits
Topic 2
Electromagnetism and its applications
 The relation between current and flux produced by a conductor
 The principle of flux linkage inducing a voltage in a coil
 The relation between current, flux, and force on a conductor
 Fleming’s rules
 Application in electrical machines and transformers
Topic 3
Capacitance and capacitors
 Capacitance
 Parallel plate capacitor
 Dielectric strength and permittivity
 Electrostatic field and field strength
 Series/parallel circuits with capacitive elements
 Behaviour of capacitors for step variations in DC voltage
 Energy stored in capacitive components
 Need for discharging of capacitors to discharge stored energy
 Different types of capacitors and applications
 Construction of a practical capacitor and capacitance marking
Topic 4
Inductance and inductors
 Inductance
 Construction of an inductor
 MMF/Ampere turns
 Flux and flux density
 Permeability and reluctance in a magnetic core
 BH curve and saturation
 Hysteresis
 Behaviour of inductances for step variations in DC voltage
 Energy storage in inductive components
 Need for discharging of inductances to discharge stored energy
Topic 5
AC circuits
 AC waveform characteristics and mathematical expression (amplitude/time relationship)
 Peak and RMS values and calculation of crest (peak) factor and form factor for pure sine wave using mathematical methods
 Purely resistive circuits: voltage/current relationships
 Purely inductive circuits and the concept of inductive reactance
 Voltage/current relationships in inductive AC circuits
 Saturation and the behaviour of inductance upon saturation in an AC circuit
 Hysteresis associated with AC supply and hysteresis loss
 Purely capacitive circuits: Capacitive reactance, series and parallel capacitor calculations
 Voltage/current phase relationships of capacitive AC circuits
 Dielectric loss and loss angle in a capacitor
Topic 6
Solving AC circuits using polar and Cartesian coordinates principles
 Introduction to phasors and polar coordinates
 Expressing an AC voltage waveform using polar coordinates
 Using polar coordinate system to explain voltage/current relationship of an inductor
 Using polar coordinate system to explain voltage/current relationship of a capacitor
 Calculation of impedance of AC circuits using polar coordinates in series and parallel circuits
 Voltage/current/impedance relationship using polar representation
 Use of Cartesian coordinates to express voltage and current in AC circuits
 Introduction to complex algebra and the operator ‘i’
 Conversion between polar and Cartesian coordinates
 Cartesian coordinates to represent AC circuits using complex notation
 Concept of impedance in AC circuits and voltage/current calculations using an impedance
 Power in AC circuits and the concept of power factor to calculate useful power
 Power Triangle
Topic 7
Solving AC circuits using complex numbers
 Expressing an AC voltage waveform using complex numbers
 Using complex numbers to explain voltage/current relationship of an inductor
 Using complex numbers to explain voltage/current relationship of a capacitor
 Calculation of impedance of AC circuits using complex numbers in series and parallel circuits
 Voltage/current/impedance relationship using complex numbers
 Use of complex numbers to express voltage and current in AC circuits with a mix of components
Topic 8
Circuit theorems applied to AC circuits
 Constant voltage source
 Constant current source
 Kirchhoff’s Law as applied to AC circuits
 The Superposition Theorem
 Thevenin’s Theorem
 Norton’s Theorem
 Thevenin and Norton equivalent networks
 Example calculations
Topic 9
Circuit theorems applied to AC circuits
 Maximum Power Transfer Theorem
 Impedance matching
 Deltastar transformation for circuit reduction
 Mesh current analysis in AC circuits
 Nodal analysis
 Example calculations
Topic 10
Electrical measurements
 Measurement using instrumentsBasic galvanometer principle
 Analogue instruments using moving coil/moving iron principle
 Use of shunts and multipliers
 Ohm metres and power metres
 Digital instruments and their principle
 Loading effect of instruments and errors introduced
 Oscilloscope as measuring device
 Potentiometers
 Bridges and their use in measurements
Topic 11
Complex waveforms, harmonics and resonance
 General equation for a complex waveform
 Harmonic synthesis
 RMS, Mean and form factor for complex waveforms
 Power associated with harmonic components
 Sources of harmonics
 Resonance in AC circuitsdefinition
 Series resonance
 Parallel resonance
 Q factor
 Voltage magnification
 Resonance due to harmonics
Topic 12
Unit Review
In the final week students will have an opportunity to review the contents covered so far. Opportunity will be provided for a review of student work and to clarify any outstanding issues. Instructors/facilitators may choose to cover a specialized topic if applicable to that cohort.
Software/Hardware Used
Software

Software: National Instruments ELVISmx Instrument Launcher ( on Remote Lab); National Instruments Multisim ( on Remote Lab)

Version: N/A

Instructions: N/A

Additional resources or files: N/A
Hardware
 National Instruments MyDAQ (on Remote Lab)