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Suppose the initial charge on the capaci...

Suppose the initial charge on the capacitor in Exercise 7.7 is 6 mC. What is the total energy stored in the circuit initially ? What is the total energy at later time?

Text Solution

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`U_(i) = U_(E ) = (1)/(2) (q_(0)^(2))/(C ) `
`:. U_(i) = ( 1)/(2) xx (( 6 xx 10^(-3))^(2))/( 30 xx 10^(-6))`
`:. U_(i) = 0.6 J`
According to law of conservation of energy for pure ( or free ) LC oscillations,
`U _(i) = U_(f ) = 0.6 J`
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