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Why the potential energy of a spherical conductor is U= (1/2)VQ and why not U=VQ ?
Dear pavan,
Energy stored in capacitor is E=QV/2 or E=CV2/2 or E=Q2/2Cfactor 1/2 is due to average potential difference across the capacitor while it is charged.• Battery supply QV amount of energy during charging a capacitor but energy stored in capacitor is QV/2 ,the another half of energy is transferred into the circuit resistance in the form of heat. Thus, heat in the wire=energy supplied by battery-energy stored in the capacitor =QV-QV/2 = QV/2.
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Askiitians Expert
Sagar Singh
B.Tech, IIT Delhi
energy stored in a capacitor=CV2/2
V is the potential of sphere...
Q=CV
so energy=QV/2
energy stored is potential energy of sphere so PE=VQ/2 not VQ
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