Solution Using Equations 26.8 and 26.10, we reduce the
combination step by step as indicated in the figure. The 1.0-%F
and 3.0-%F capacitors are in parallel and combine according
to the expression Ceq # C1 & C2 # 4.0 %F. The 2.0-%F and
6.0-%F capacitors also are in parallel and have an equivalent
capacitance of 8.0 %F. Thus, the upper branch in Figure
26.11b consists of two 4.0-%F capacitors in series, which
combine as follows: