What is megohm?

Megohm is a unit of measurement that describes electrical impedance. Meg- is a slightly shortened prefix for mega, which is 1x10 6 ; -Ohm is a basic unit that is represented by the Greek letter omega (Ω). Megohm is therefore an impedance measurement that represents a million ohms. OHM combines the system's resistance to handing over one ampere current between two conductive medium points, such as a copper wire that is held with a constant one -off potential. This is the basis for Ohm's law, named for German physicist George Simon Ohm, who first created this relationship among the most basic elements of electricity in 1827. The electrical impedance is also commonly referred to as resistance, although this is actually in the case of direct current (DC). Ohm's law can be represented by an equation v = IR - in a straight voltage that is measured in the volts, equal to the current that is measured in the amps, and r equal to the conductor's resistance.

When Ohm evolved, what would later be known as Ohm's law, he was mocked by his colleagues and released in ridicule. It would take six years to obtain a confirmation for its discovery, although it has shown that the amount of current passing through the object was directly proportional to the voltage across the material at a fixed temperature. This empirical observation made by OHM in 1827 provided the basis for understanding the electrical circuits.

The proportionality unit in the relationship between voltage and current is now bearing Ohm's name. In high -resistive circuits, OHM is often replaced by megohm when individual ohms are not a usable scale. As a result, the Megohm test is often used to discover the status of Insul System, also called an insulating resistor test, where the aim is to maintain a highly resistance path, for example in a cooling compressor.