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# What does mean by energy stored in capacitor? Prove that-"The ratio of change in potentials of conductors after connecting two charged conductors is inversely proportional to their capacitances". Draw a curve between electric field and distance for an uniformly for an uniformly charged non-conducting sphere.

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## Energy stored in a capacitor : A capacitor is a device to store energy. The process of charging up a capacitor involves the transferring of electric charges from its one plate to another.The work done in charging the capacitor is stored as its electrical potential energy. Consider two insulated conductor A and B of capacitance C1,C2 and carrying charges Q1 and Q2. Let V1 and V2 be their respective potentials.Q1=C1V2 and Q2=C2V2If connect with wire charge flow higher to lower potential Total charge on system Q1+Q2Total capacitance C1+C2V=QC=Q1+Q2C1+C2=C1V1+C2V2C1+C2V∝1C1+C2Electric field distance curve by uniformly charged non- conducting sphere.E outside (r>r0)E=KQr2E inside (r<r0)E=KQ.rr30

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