5 cm त्रिज्या वाले एक खोखले धातु के गोले को इस प्रकार आवेशित किया जाता है कि उसकी सतह पर विद्युत विभव 10 V हो जाता है। गोले के केंद्र से 2 cm की दूरी पर विद्युत विभव कितना होगा?

Consider two uncharged capacitors of equal capacitance 200 pF. One of them is charged by a 100 V supply and disconnected. Now this capacitor is connected to the uncharged capacitor. The amount of electrostatic energy lost in the process is:

Four capacitors C1 = C2 = C3 = C4 = 10 μF are connected in a bridge network, and a fifth capacitor C5 = 2.5 μF is connected across the bridge terminals with a 50 V battery attached. The equivalent capacitance and the charges on each capacitor respectively are: