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Homework Help: Find the dielectric flux and polarization values

  1. Sep 19, 2013 #1
    1. The problem statement, all variables and given/known data
    In a slab of Teflon (εr=2.1), the electric field is E= 6Ux+12Uy-20Uz V/m. Find D and P (BTW εr stands for the relative dielectric constant)

    2. Relevant equations

    3. The attempt at a solution
    (a) D=(ε0)(εr)E=(8.85e-12)(2.1)(6Ux+12Uy-20Uz)=(1.1151e-10Ux+2.2302e-10Uy-3.717e-10Uz) then find the magnitude sqrt((1.1151e-10)^2+(2.2302e-10)^2+(3.717e-10)^2)=4.475e-10 C/m^2
    (b) P=D-(ε0)E=4.475e-10-(5.31e-11Ux+1.062e-10Uy-1.77e-10Uz)=4.475e-10-2.131e-10= 2.344e-10 (units ?) I have no idea if this is correct hopefully someone can help me out?
  2. jcsd
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