At last week’s Bett Show Helen Moran, Director, Shift Learning, a research agency specialising in education technology, unveiled the results of the company’s Bett…
Month: January 2018
The concept of electric circuits
Electric circuits and electromagnetic field theory are essential for any electrical engineering field. Many branches such as power machines, electronics, communications and all modern…
Charge / electrical current
This post answers the question "What is the definition of electric charge?". The concept of charge is a basic one to explain the phenomena…
Voltage / power
To move an electrical charge in a specific direction you need to apply some force. This force is called by an external electromotive force…
Electric circuit elements / active elements
A circuit is an interconnection of circuit elements. And analysing circuits we determine voltages and currents through the circuit elements. Let's assume that all…
Resistors in series. Voltage divider circuit and equation
Resistance is an electric circuit component, which is characterised by energy losses in a circuit as heat, some mechanical work, or electromagnetic radiation. No…
Resistors in parallel. Current divider circuit and equation
Two or more resistors are said to be in parallel, if identical voltage is across all the resistors. In accordance to Kirhhoff's Law the…
Passive elements – inductance
Inductance is an ideal electric circuit component which is close to the inductor in its features and components - collecting the energy of magnetic…
Passive elements – capacitance
Capacitance is an ideal element of an electric circuit, replacing the capacitor, storing the energy of electric field. Capacitance is marked with the letter C…
Replacing circuit components with ideal circuit elements
Let us talk about the importance of replacing real circuit components by their ideal circuit elements, taking into account complex factors. Representation of resistance,…