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Answer:
Answer is 2 ) 50 / 3
Explanation:
Net capacitance = 2/3 × C = 2/3 micro F
Q = C × V = Cnet × V = 20 / 3 micro Coulomb
C × V = C ( Vb - Va )
20 / 3 micro Coulomb = 1 micro F × ( Vb - Va )
Vb - Va = 20 / 3
Vb - 10 = 20 / 3
Vb = 20/3 + 10
Vb = 50 / 3
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