[填空题]
Two resistors and tw,h4o4yld z rjg;-3 uxeo unchargv* 8,a4zxuf lrjcp+4 xed capacitors are arranged as shown in (Fig. Below). Then a potential difference of 24 V is applied ac8l,v jr 4azx4x fpu*+cross the combination as shown.
(a) What is the potential at point a with switch S open? (Let $V=0$ at the negative terminal of the source.) V
(b) What is the potential at point b with the switch open? V
(c) When the switch is closed, what is the final potential of point b? V
(d) How much charge flows through the switch S after it is closed? $\mu F$