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A coulomb is a large unit in the SI system of units which is based on meters, kilograms and seconds. There are other unit systems; for example in the electrostatic cgs (centimeter/gram/second) unit system the unit of charge is the statcoulomb, and that is much smaller, being equal to about 1/3 nanocoulomb. 

In the SI system, the force between charges is K*q1*q2/r². K = 9*10^9 N*m²/C² You can imagine that to create a force of 1 N from charges separated by 1 m requires a very large charge.

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Is a large unit. write this your mam will give you 1 out of 2
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