Ratio of charge on C1 when switch S is open and when S is closed is
A
1
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B
2
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C
3
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D
4
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Solution
The correct option is C 3 Charge on C1 when switch was open, qi=12×3
By V=iR⇒12=i×6⇒i=2A ∴ V across C1 is =2×2=4V
So, charge on C1 after switch is closed = qf=3×4 qiqf=12×33×4=3