Find the expression for capacitance of parallel plate capacitor partially filled by dielectric slab.
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Let A be the plate area and d be the distance between the plates,
1) A dielectric slab of thickness t is inserted, Due to polarization inside the dielectric electric field will reduce, ...
=> C = ε₀A/(d - t + t/k) ...
2) A metallic plate of thickness t is inserted, ...
C = ε₀A/(d - t)
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