The physical phenomenon of parallel resonance is widely used in radio electronics. To build oscillatory circuits consisting of active and reactive resistances, a circuit should be assembled from resistance, capacitance, and inductance. To do this, you need to understand the purpose of resonance, finding the resistance of radio components, its main application in radio engineering, as well as the conditions for its occurrence.
To understand the origin of the field and its characteristics, it is necessary to have an understanding of many natural phenomena. To put it simply, this phenomenon is a special form of matter created by magnets. Moreover, the sources of the magnetic field can be relays, current generators, electric motors, etc.
It is scientifically proven that certain parameters of lighting in a room affect its perception by a person. Therefore, the correct choice and location of light sources is very important in interior design. But sometimes buyers do not understand what is the difference between lamps, for example, 2500 and 4000 Kelvin. What color these temperatures have and their role in creating mood can be understood by reading the tables on the Internet or by studying the issue in more detail on your own.
Electromagnetic induction refers to the phenomenon when an electric current, field or polarization occurs. In this case, there is a change in the time interval for the magnetic field or the movement of the material medium inside the latter. The founder of electromagnetic induction is Michael Faraday. He carried out numerous studies to determine what current is called induction.
When carrying out projects of power supply systems for various buildings, great attention is paid to safety. Everyone uses electrical appliances and knows what danger a bare wire is, what insulation and grounding are. And with such a concept as equalization and equalization of potentials, and what is their difference, not everyone is familiar. You need to have at least an elementary understanding of this in order to preserve your life and safety.
Each substance is capable of conducting current to a different degree, this value is influenced by the resistance of the material. The resistivity of copper, aluminum, steel and any other element is denoted by the letter of the Greek alphabet ρ. This value does not depend on such characteristics of the conductor as size, shape and physical state, while ordinary electrical resistance takes these parameters into account. Resistivity is measured in Ohms multiplied by mm² and divided by meter.
Operation of the electrical network is impossible without the use of cables. The wires used are characterized by various parameters, one of which is insulation. Over time, this parameter deteriorates due to the influence of the external environment and heating with the flow of current. Therefore, in order to avoid the occurrence of a breakdown, it is periodically necessary to carry out, in accordance with regulatory documents, insulation resistance measurements.
Trouble-free operation of the device depends on the compliance of the technical characteristics of the device with the norms of the supply network. Knowing the voltage, resistance and amperage in a circuit, an electrician will understand how to find the power. The formula for calculating an important parameter depends on the properties of the network to which the consumer is connected.
An easy way to visualize the difference between AC and DC currents is to plot their direction versus time. The first will look like a straight line, and the second will look like a wavy line. One cycle of this curve is the graphic basis of how alternating current is indicated on the circuits and pictograms (~), and the acronym AC (Alternating Current) has become a well-established term in texts.