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March 24, 2017

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The electric field between the plates of a paper-separated (K = 3.75) capacitor is 9.21 104 V/m. The plates are 2.05 mm apart and the charge on each plate is 0.775 µC. Determine the capacitance of this capacitor.

  • Physics - ,

    E= 8.18•10⁴ V/m
    d=2.2 mm
    q=0.775 μ C
    ε (paper)= 2.3
    (a) C=q/U
    E=U/d

    C=q/Ed = ...
    (b)
    ε₀=8.85•10⁻¹² F/m

    C= ε₀εA/d =>
    A=Cd/ε₀ε=...

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