Questions
The effective capacitance between points X and Y shown in fig. assuming C2 = 10 F and that the other capacitors are all 4.00 F is
detailed solution
Correct option is D
The equivalent circuit is shown in fig. If a battery is connected between X and Y, the points P and Q are at the same potential becauseC1=C4=C3=C5=4μFHence no charge flows through C2. Now C1 and C5 are in series. Hence 1C′=1C1+1C5or C′=C1C5C1+C5=4×44+4=2μFSimilarly, C4 and C3 are in series and their equivalent capacitance C" is also 2 μF. Further, C' and C" are in parallel. Hence net capacitance between X and Y=C′+C′′=2μF+2μF=4μFTalk to our academic expert!
Similar Questions
Two identical metal plates are given positive charges Q1 and Q2 (<Q1) respectively. If they are now brought close together to form a parallel plate capacitor with capacitance C, the potential difference between them is
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