# Fundamentals of Electrical Engineering I

## Course description

Electric charge and current. Charge distributions. Electric current density. Conservation of charge. Continuity equation. Kirchhoff’s current law.

Electric force. Coulomb’s law. Electric field. Electric field strength. Gauss law of electric field. Work of electric force. Electric potential energy. Electric potential. Voltage. Kirchhoff’s voltage law. Electric dipole. Conductor and electric field. Image theory. Dielectric material and electric field. Polarization. Electric flux. Electric flux density. Dielectric permittivity. Boundary conditions of electric field. Dielectric breakdown. Capacitance. Capacitor. Partial capacitances. Energy of electric field. Forces and torques. Capacitor circuits.

Current field. Ohm’s law. Joule’s law. Specific electric conductivity. Boundary conditions of current field. Resistance and conductance. Grounding resistance. Resistor. Non-linear resistor. Voltage-Current characteristic. Voltage and current sources. DC electric circuits. Analyses and theorems.

## Objectives and competences

To acquire fundamental knowledge on electrostatic field, current field and DC electric circuits.

The acquired knowledge serves as a basis for further electrotechnical studies.

## Learning and teaching methods

Lectures are used to teach students the basic theory of electrical engineering from the course Content and use additional practical examples to elaborate on it. In lectures also demonstration experiments are used together with computer animations. Some computer tools are presented that are used in computation and visualization of electric fields.

At the tutorials (exercises) the students elaborate further the problems by solving specific tasks / cases with analytical solutions.

Laboratory exercises include preparations where students get acquainted with work to be performed in a laboratory, homework, where students independently solve the pre-prepared case and additional literature studies and experimental work in the laboratory, where they prepare experiments according to the instructions and describe the experimental results.

## Intended learning outcomes

After successfully passed exam the student should be able to:

• Be acquainted with basic quantities used to describe electrical phenomena, especially electrostatic fields, DC current conduction and DC circuits
• Be familiar and understand the relations between the quantities in mathematical (equations) and graphical presentation
• Use the relations for analytical calculations
• Be capable of use of some computer tools (such as Matlab, Octave, Python, …) to plot the analytical expressions in a graph
• Use a computer tool to calculate distribution of electric field and/or current density field and present it graphically
• Understand and use instructions to prepare and run real experiments, observe and analyse data and draw conclusions

## Reference nosilca

1. ADAMIČ, Michel, DRVARIČ TALIAN, Sara, SINIGOJ, Anton R., HUMAR, Iztok, MOŠKON, Jože, GABERŠČEK, Miran. A transmission line model of electrochemical cell's impedance : case study on a Li-S system. Journal of the Electrochemical Society. [Online ed.]. 2019, vol. 166, iss. 3, str. a5045-a5053.
2. HUMAR, Iztok, GE, Xiaohu, XIANG, Lin, JO, Minho, CHEN, Min, ZHANG, Jing. Rethinking energy efficiency models of cellular networks with embodied energy. IEEE network, 2011, vol. 25, no. 2, str. 40-49.
3. HUMAR, Iztok, SINIGOJ, Anton R., BEŠTER, Janez, HAGLER, Marion O. Integrated component web-based interactive learning systems for engineering. IEEE transactions on education, Nov. 2005, vol. 48, no. 4, str. 664-675, ilustr.
1. BURNIK, Urban, KRIŽAJ, Dejan, TOPČAGIĆ, Zumret, MEŽA, Marko. Measuring impedance using an open-source instrumentation platform. International journal of electrical engineering education. Apr. 2018, vol. 55, no. 2, str. 168-185.
2. BURNIK, Urban, MEŽA, Marko. Open-source impedance measurement instrument development project enhances engineering students' technical and organizational skills. International journal of engineering education. 2017, vol. 33, no. 6 (a), str. 1751-1762.
3. MEŽA, Marko, KOŠIR, Janja, STRLE, Gregor, KOŠIR, Andrej. Towards automatic real-time estimation of observed learner's attention using psychophysiological and affective signals : the touch-typing study case. IEEE access. 2017, vol. 5, str. 27043-27060.

## Study materials

Humar I., Bulić E., Sinigoj A. R.: Osnove elektrotehnike I. 1. izd. Ljubljana: Založba FE, 2017.

Sinigoj A. R., Humar I.: Video Osnove elektrotehnike II. Ljubljana, 2012.

Humar I.: Fundamentals of electrical engineering through computationally supported laboratory experiments. 1. izd. Ljubljana: Založba FE, 2018.

Sinigoj A. R.: Osnove elektromagnetike, Založba FE in FRI, Ljubljana, 1994.

Sinigoj A. R.: Elektrotehnika 1 in 2, Založba FE in FRI, Ljubljana, 2006.

Humar I., Bulić E., Penič S., Sinigoj A. R.: OE I – LAB, Laboratorijske vaje. Založba FE in FRI, Ljubljana, 2020.

Duffin W. J.: Electricity and magnetism, McGraw-Hill, London, 1990.Popović D. B.: Osnovi elektrotehnike 1 in 2, Građevanska knjiga, Beograd, 1986.

Halliday D, Resnick R., Walker J., Fundamentals of Physics, John Wiley, 1997.

Purcell E. M.: Electricity and magnetism, McGraw-Hill, New York, 1965.

Albach M.:Grundlagen der Elektrotechnik 1 und 2, Pearson Studium, Muenchen, 2005.

Notaroš B. M.: Electromagnetics, Pearson, 2010.

spletna učilnica e.fe.

## Bodi na tekočem

Univerza v Ljubljani, Fakulteta za elektrotehniko, Tržaška cesta 25, 1000 Ljubljana