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sphyics
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Si unit of current which is a fundamental physical quantity is ampere and what is its CGS unit, and for voltage..
The CGS (centimeter-gram-second) system of units is an older metric system that uses centimeters, grams, and seconds as base units. In this system, the unit of current is the statampere (statA), which is equivalent to 1/299,792,458 of an ampere in the SI (International System of Units) system.
The CGS (centimeter-gram-second) system of units is an older metric system that uses centimeters, grams, and seconds as base units. In this system, the unit of voltage is the statvolt (statV), which is equivalent to 1/299,792,458 of a volt in the SI (International System of Units) system.
The CGS system was replaced by the SI (International System of Units) system because it was found to be less convenient and practical for scientific and engineering measurements. The SI system is based on seven base units and is more consistent and coherent.
The CGS and SI systems of units are related by a conversion factor of 1/299,792,458. This means that one statampere (CGS unit of current) is equal to 1/299,792,458 of an ampere (SI unit of current) and one statvolt (CGS unit of voltage) is equal to 1/299,792,458 of a volt (SI unit of voltage).
While the CGS system is no longer widely used, it is still used in some specific scientific fields, such as plasma physics and electromagnetism. In these fields, the CGS units are more convenient for calculations and theoretical equations. However, all experimental measurements are usually converted to SI units for consistency and ease of comparison with other studies.