Question

Two identical capacitors are connected as shown in given figure, having a charge . A dielectric slab is introduced between the plates of the capacitor (I) so as to fill the gap, keeping the battery remain connected. The charge on each capacitors now will be :

146655
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A

B

C

D

Hard

Solution

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Correct option is A)

Without dielectric : and
As they are in series so the charge on each capacitors is equal to equivalent charge.i.e 

With dielectric in (I), the capacitance of it becomes
now and

Thus the on each capacitor is

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