Q.

Two capacitors A and B are connected in series with a battery as shown in fig. When the switch S is closed and the capacitors get charged fully, then

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a

the p.d. across the plates of A is 4 V and across the plates of B is 4 V

b

the p.d. across the plates of A is 6 V and across the plates of I is 4 V

c

the ratio of electrical energies stored in A and B is 2:3

d

the ratio of charges on A and B is 3 : 2

answer is B.

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Detailed Solution

The two capacitors are connected in series. The equivalent capacitance C is given by1C=1C1+1C2=12+13=56C=6/5μFCharge on each capacitor =6 / 5 x 10 = 12 coulomb.Potential diff. across A=122=6 volt Potential diff. across  B=123=4 volt
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