Coulomb's constant, denoted as ke, is derived from the permittivity of free space, ε0, which has units of F/m (farads per meter). However, when expressed in terms of basic SI units, ε0 can also be represented as A²s⁴kg⁻¹m⁻³. The discussion clarifies that while some may initially consider the units of Coulomb's constant to be F/m, the correct interpretation involves understanding its relationship with ε0 and the fundamental SI units. This distinction is crucial for accurate applications in electrostatics.
PREREQUISITESStudents of physics, electrical engineers, and anyone involved in the study of electrostatics and capacitance will benefit from this discussion.
ZedCar said:Coulomb's constant, which appears in Coulomb's Law, contains ε0.
The units of ε0 being F/m
Are the units of Coulomb's constant therefore F/m ?
Thank you.
ZedCar said:Coulomb's constant, which appears in Coulomb's Law, contains ε0.
The units of ε0 being F/m
Are the units of Coulomb's constant therefore F/m ?
Thank you.
PeterO said:I would have thought F-1m since ke = 1/(4∏εo)