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Question

# What is the energy stored in the capacitor between terminals a and b of the network shown in the figure? (Capacitance of each capacitance C=1μF)

A
12.5μJ
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B
Zero
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C
25μJ
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D
50μJ
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Solution

## The correct option is A 12.5μJThe circuit resembles wheatstone bridge with the capacitor between b and d as bridge capacitor. Hence, it can be removed (replaced by open circuit). By symmetry, voltage on all other capacitors is same.Let voltage across all other capacitors be VCThen using KVL in loop 'abea', 2VC=10VC=5 VEnergy stored in each capacitor, E=12CV2E=12.5 μJ

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