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Question

Two identical capacitors 1 and 2 are connected in series to a battery as shown in the figure. Capacitor 2 contains a dielectric slab of dielectric constant slab of dielectric constant K as shown. Q1 and Q2 are the charges stored in the capacitors. Now the dielectric slab is removed and the corresponding charges are then:


A
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B
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C
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D
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Solution

The correct option is C

Let C be the capacity without slab. Then after removing the slab, net capacity is C/2


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