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The capacity of a capacitor becomes 10 m...

The capacity of a capacitor becomes `10 mu F` when air between the plates is replaced by a dielectric slab of K = 2. What is the capacity of the condenser with air in between the plates ?

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Here, `C_(m) = 10 mu F, C_(0) = ? K = 2` As `K = (C_(m))/(C_(0)) :. C_(0) = (C_(m))/(K) = (10)/(2) = 5 mu F`
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