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A capacitor of 2 mu F is charged as show...


A capacitor of `2 mu F` is charged as shown in the diagram. When the switch S is turned to position 2, the percentage of its stored energy dissipated is:

A

`0 %`

B

`20 %`

C

`75 %`

D

`80 %`

Text Solution

Verified by Experts

The correct Answer is:
D
`U_(i) =( q^(2))/(2xx2 ) , U_(f ) =(q^(2))/(2xx(2+8))=(U_(i))/(5)`
`(U_(i) -U_(f))/(U_(i))xx 100 = (u_(1)-U _(i//5) )/(U_(i))xx 100 =80 % `
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