Formulas with which you can find power, knowing the strength of the current, voltage and resistance. An example of calculating the power of a three-phase electric motor.

What is the difference between AC and DC in a circuit. How to get alternating current and direct current. A simple explanation for beginner electricians.

Discoveries and inventions of Nikola Tesla that you should be aware of. The creations of the Serbian scientist who changed the whole world. Description of the most important inventions of Tesla.

Formulas with which you can find the strength of the current through power, resistance and voltage. Examples of solving problems in which it is necessary to calculate the current strength in a circuit.

What is the law of conservation of electric charge? Who and when discovered this law. Simple explanation and formulas describing the law of conservation of charge.

What is active, reactive and apparent power in an ac circuit. Definition of concepts, formulas for calculating capacities and answers to popular questions.

What is self-induction and how does it arise. The benefits and harms of the phenomenon of self-induction, as well as its practical application. Video lesson on the topic.

Why does an electric arc arise and what is the scope of this phenomenon. The benefits and harms of the occurrence of an electric arc, as well as methods to combat it.

What describes Ampere's law, formulas for calculation, its practical significance. Ampere's direction of power. A simple explanation and a brief statement of the law.

The explanation in simple words, what is hysteresis. The use of hysteresis in electrical engineering and electronics. What harm and benefit from this phenomenon.

What is the Lorentz force and how to determine the direction of this force. Simple explanation of material with formulas. The use of Lorentz force in life.

How is the distribution of charges in the conductor during the flow of current. Power consumption of a solitary conductor. How to apply distribution knowledge in practice.

What is an electric field, what are its characteristics and properties. A simple definition of a concept. How to detect an electric field and where it occurs.

What is electric capacity, what does this quantity depend on and in what units is it measured. Electric capacity of capacitors and batteries. Video lesson on the topic.

What are conductors, semiconductors and dielectrics in an electric field, what is their main difference. Zone theory in various substances. Video lesson on the topic.

What is an electric charge, how is it measured and by whom it was discovered. Unit of measurement of electric charge in the SI system. The interaction of electric charges.

What is the resonance of currents and voltages in simple words. Conditions for the occurrence of resonance and the application of the phenomenon in practice. The benefits and harms of voltage resonance.

What is electric current and how does it arise. Conditions for the flow of electric current in metals, semiconductors, gas and liquid. A simple explanation of the concept.

What are eddy currents and what are the causes of their occurrence. Why are they also called Foucault currents. The use of eddy currents in everyday life and in production.

An explanation of the laws of Faraday in simple words with formulas. The first and second Faraday law for electrolysis. Faraday law for electromagnetic induction.

Step-by-step instructions for checking the diode bridge with a multimeter. The device diode bridge and the location on the board. How to know if a working diode bridge or not.

What is phase and linear voltage in three-phase circuits, what is their ratio. Diagram and formulas explaining phase and line voltage differences.

Formulation of the Law of Coulomb and explanation in your own words. Electric charges and their interaction. Coulomb formula in vector form and for a dielectric medium.

What is the labeling of resistors with color bars and numbers. Decoding of the marking of domestic and foreign resistors. How to determine the value of a resistor.