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Question

Consider the figure shown. The potential difference VA−VB is :

155362_7b42d918ef0e4950a86b0eada11db923.png

A
E[C1C4C2C3(C1+C2)(C3+C4)]
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B
E[C1C4+C2C3(C1+C3)(C2+C4)]
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C
E[C1C3C2C4(C1+C2)(C3+C4)]
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D
E[C1C3C2C4(C1+C3)(C2+C4)]
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Solution

The correct option is A E[C1C4C2C3(C1+C2)(C3+C4)]
Let the charge be as shown. (Capacitors in series have the same charge)
Taking loop containing C1,C2 and E we get
qC1+qC2E=0orq=E[C1C2C1+C2]
Similarly, from loop containing C3,C4,E we get
qC3+qC4E=0orq=E[C3C4C3+C4]
Now,
VAVB=qC2qC4
=E[C1C1+C2C3C3+C4]
=E[C1C4C3C2(C1+C2)(C3+C4)]

172555_155362_ans_0f9c5206feda442282bb4956dc5e40a8.png

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