Q 25. A - First calculate total capacitance of ckt, then total charge provided by battery. Q=CV Then find charge on the 4 mu cpctr across pts a and b. Charge splits in ratio of capacitances when parallel cpctrs are there.( like Mole fraction)
Now, V across a and b= Q on 4mu / C. that is, 4 mu.
If the path is beautiful, let us not ask where it leads. But if the DESTINATION is beautiful, let us not ask HOW THE PATH IS.