An electrical circuit is a path of electrical components that, when subjected to a potential difference between two points, allows a current to flow through it. To further distinguish itself from electrical circuitry, an electronic circuit must include at least one active component, such as a diode, transistor, resistor, capacitor, etc. In this form, the circuit is no longer considered an electrical circuit but rather an electronic one. Network theorems are used to solve problems involving complex networks, which share the same name as electric circuits.