Question

what is the dimension of coulombic constant K

Answer 1

Coulomb is the SI unit of electric charge. Therefore, the dimensional formula of Coulomb is the same as that of the electric charge. Therefore, Coulomb is dimensionally represented as [M0 L0 T1 I1].

Answer 2

$\huge\bold\red{Hello}$

The Coulomb constant, the electric force constant, or the electrostatic constant (denoted ke, k or K) is a proportionality constant in electrostatics equations. In SI units it is equal to 8.9875517923(14)×109 kg⋅m3⋅s−2⋅C−2.