Two identical parallel plate vapaciters are conneeted in series to a battery of \( 100 \mathrm{~...

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Two identical parallel plate vapaciters are conneeted in series to a battery of \( 100 \mathrm{~V} \). A dielectric slab of dielectric constant \( 4.0 \) is inserted between the plates of second capacitor. The potential difference across the capacitors winl now he respectively
(A) \( 50 \mathrm{~V}, 50 \mathrm{~V} \)
(B) \( 80 \mathrm{~V}, 20 \mathrm{~V} \)
(C) \( 20 \mathrm{~V}, 80 \mathrm{~V} \)
(D) \( 75 \mathrm{~V}, 25 \mathrm{~V} \)
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