A capacitor of unknown capacitance C is charged to 130 V andconnected across an initially uncharged 75 uF capacitor. if thefinal potential difference across the 75 uF capacitor is 47 V whatis C? After you find the value of C, you charge this capacitor C toa potential difference V=140 V between its plates. The chargingbattery is now disconnected and a slab material ( k=7.20 is slippedbetween the plates. what is the potential energy of the device,both before and after the slab is introduced?
