Reference Terms and Units

Variable	Description	Unit variables	Units
${\vec {E}}$	Electric Field Intensity	$V/m\,\!$ or $N/C\,\!$	Volts per Meter or Newtons per Coulomb
${\vec {D}}$	Electric Flux Density	$C/m^{2}\,\!$	Coulombs per Meter squared
${\vec {H}}$	Magnetic Flux Intensity	$A/m\,\!$	Amps per Meter
${\vec {B}}$	Magnetic Flux Density or Magnetic Induction	$T\,\!$ or $W/m^{2}\,\!$ or $G\,\!$	Tessla or Watts per Meter squared or Gauss'

Relationships

${\vec {D}}=\in {\vec {E}}$

• In free space:

• $\in _{0}=1/(36*\pi )*10^{-9}\,\!$ F/m

${\vec {B}}=\mu {\vec {H}}$

• In free space:

• $\mu _{0}=4*\pi *10^{-7}\,\!$ H/m