Consider the figure shown. The potential difference VA−VB is :
A
E[C1C4−C2C3(C1+C2)(C3+C4)]
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B
E[C1C4+C2C3(C1+C3)(C2+C4)]
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C
E[C1C3−C2C4(C1+C2)(C3+C4)]
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D
E[C1C3−C2C4(C1+C3)(C2+C4)]
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Solution
The correct option is AE[C1C4−C2C3(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+qC2−E=0orq=E[C1C2C1+C2]
Similarly, from loop containing C3,C4,E we get q′C3+q′C4−E=0orq′=E[C3C4C3+C4]