[填空题]
A circuit contains a s 5 id8, 7)nwgxgmy i.woc0op2ki qh m-es3zf2k/ngle 250-pF capacitor hooked across a battery. It is desired to store three times as much energy in a combination of two capacitors by adding a single capacitor e s/3h-f2m zkqto this one.
How would you hook it up?
what would its value be? pF