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1. Assertion (A): In a perfect capacitor, the current density is given by ω ∈0E0∈'rcos(ωt + 90°), where ∈r' is real part of dielectric constant.Reason (R): In a perfect capacitor, dielectric losses are zero.





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  • By: guest on 02 Jun 2017 12.59 am
    If dielectric losses are zero, the current in capacitor leads the applied voltage by 90°. Also imaginary part of is ∈r is zero.
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