Full name: exacoulomb
Plural form: exacoulombs
Symbol: EC
Category type: electric charge
Scale factor: 1.0E+18
The SI derived unit for electric charge is the coulomb.
1 coulomb is equal to 1.0E-18 exacoulomb.
Valid units must be of the electric charge type.
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The SI prefix "exa" represents a factor of 1018, or in exponential notation, 1E18.
So 1 exacoulomb = 1018 coulombs.
The definition of a coulomb is as follows:
he coulomb, symbol C, is the SI unit of electric charge, and is defined in terms of the ampere: 1 coulomb is the amount of electric charge (quantity of electricity) carried by a current of 1 ampere flowing for 1 second. It is also about 6.241506×1018 times the charge of an electron. It is named after Charles-Augustin de Coulomb (1736-1806).