Why is the electric field in a capacitor after introduction of dielectric= (sigma -sigma p)/ epsilon .
Where sigma is surface charge density and sigma p is surface charge density of the polarised dielectric.
Asked by prakriti12oct | 4th Jul, 2019, 09:31: PM
Expert Answer:
Because the electric field 
polarizes the dielectric as a result charges are induced on the surface of the dielectric which induces electric field 
. But the induced electric field is in opposite direction to the original electric field E. Therefore the net electric field is given by
polarizes the dielectric as a result charges are induced on the surface of the dielectric which induces electric field . But the induced electric field is in opposite direction to the original electric field E. Therefore the net electric field is given byAnswered by Utkarsh Lokhande | 5th Jul, 2019, 09:16: AM
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