To move an electrical charge in a specific direction you need to apply some force. This force is…
Electric circuit elements / active elements
A circuit is an interconnection of circuit elements. And analysing circuits we determine voltages and currents through the…
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…
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.…
Passive elements – inductance
Inductance is an ideal electric circuit component which is close to the inductor in its features and components…
Passive elements – capacitance
Capacitance is an ideal element of an electric circuit, replacing the capacitor, storing the energy of electric field. Capacitance…
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…
Linear electric circuits
Linear electric circuits and linear circuit elements are those where resistance, capacitance and inductance are not dependent on…
Voltage division – equivalent resistance for series connection
Let us take two resistors R1 and R2 in series and voltage source V (figure below). Resistors are in series…
Current division – equivalent resistance for parallel connection
Let us take n resistors R1 ... Rn connected in parallel with voltage source V. According to Ohm’s Law the…