Therefore, two charges each with charge 1 esu sitting 1 cm apart will feel a force between them of 1 dyne. There are actually two different ways within the CGS system to define those units, electrostatic and electromagnetic. See the reference. The CGS unit of charge is esu or stat-coulomb and SI unit of charge is Coulomb (C). There is no such thing as the cgs unit for any electromagnetic quantity. Area = product of two lenghts e.g. Contributor; Definition. asked Mar 28 in Electric Field by Sandhya01 (59.1k points) electric field; class-12; 0 votes. The SI unit of current is Ampere 1 Ampere = 1 Coulomb/1 Second and i know dat CGS unit of charge is e.s.u. In the first, charge is in Franklins, and current is in statampere. What is the SI Unit of Electric Current? The size of the esu is set so that the constant in Coulomb’s force law is equal to one. In electrostatic units, electrical charge is defined by the force that it exerts on other charges. In the second, charge is in abcoulombs, current is in abamperes. For example, the CGS unit of force is the dyne, which is defined as 1 g⋅cm/s 2, so the SI unit of force, the newton (1 kg⋅m/s 2), is equal to 100,000 dynes. The CGS unit of lenght is cm (or centimeter). CGS (11) The unit of charge in CGS is derived in terms of centimeters, grams, and seconds. where ε 0 is the electric constant.The effect of the Gaussian-cgs definition is to fold the "1/4πε 0" factor into the definition of the statcoulomb by setting it equal to unity in terms of length, mass, and time; which results in the Gaussian unit of electric charge possessing the cgs dimensions of L 3/2 M 1/2 T −1. 1 Coulomb = 3 × 10 9 esu ... One of them is given negative charge and the other is charged positively. In SI system, 1/4πε0 = 9 × 10^9 N.m^2/C^2 1 N = 10^5 dyne 1m = 100cm Unit of charge in CGS unit is know as statcoulomb. One CGS esu of charge (also known as the statcoulomb) is that charge which, if placed 1 cm from a similar charge in vacuo, will repel it with a force of 1 dyne.. It is called the electrostatic unit (esu), or sometimes the statcoulomb, and is simply2 esu p dyne cm 2= g1=2 cm3= =s (12) 2Recall that the unit of force in CGS is called the dyne g cm=s2 = 10 5 N. 3 1 e.s.u= 1/3 * 10^-9 C So how do we derive the CGS unit of electric current The SI unit of current is ampere which measures the flow of electric charge across a surface at the rate of one coulomb per second.Since the charge is measured in coulombs and time in seconds, so the unit is coulomb/Sec (C/s) or amp.Meanwhile, the formula for electric current is given as follows: 1 answer. The electrostatic system of units (CGS-ESU) is a system of units used to measure quantities of electric charge, electric current, and voltage within the centimeter–gram–second (or "CGS") system of metric units. 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