Two condensers C1 and C2 in a circuit are joined as shown in figure. The potential of point A is V1 and that of B is V2.The potential of point D will be
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a
12(V1+V2)
b
C1V2+C2V1C1+C2
c
C1V1+C2V2C1+C2
d
C2V1−C1V2C1+C2
answer is C.
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Detailed Solution
V1−V2 will be divided between C1 and C2. C1 and C2 are in series. Potential difference across C1 isV1−VD=C2(V1−V2)C1+C2or VD=C1V1+C2V2C1+C2