Q.

Four capacitors with capacitances    C1= 1 mF,C2= 1.5 mF,C3 = 2.5 mF and C4 = 0.5 mF are connected as shown and are connected to a 30 volt source. The potential difference between points a and b is

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a

5 V

b

9 V

c

10 V

d

13 V

answer is D.

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Detailed Solution

ratio of C1:C2=2:3 in series potential difference is inversely proportional to the capacitance p.d across C1=VA-Va=30 x35=18 V similarly ratio of C3:C4=5:1 and p.d across C3=VA-Vb=30 x16=5 V
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