Please show all work and explanations along with answers.
621: Find the equivalent capacitance between points A and B. Use Cl = ﬁpF, Cg = 1.5 :11“,C3 = 3pF,C.1 = 3pF, Cr = l0pF and Cu- = 40pF. b: If C4 stores 0.00025 .1 of enery, determine the may stored by the other capacitors. c: Determine the potential difference between points A and B.