Answer Happy

A parallel-plate capacitor is made of two square plates 35 cm on a side and 1.5 mm apart. The capacitor is connected to a 60−V battery. a. What is the energy stored in the capacitor? Energy stored in the capacitor is μJ. b. With the battery still connected, the plates are pulled apart to a separation of 3 mm. What is the energy stored in the capacitor now? Energy now stored in the capacitor is بJ. c. This time, starting from situation in (a), with the batteries disconnected (but capacitors still charged), the plates are pulled apart to a separation of 3 mm. What is the energy stored in the capacitor now? Energy now stored in the capacitor is μJ.