If the charge on the condenser of $10^\circ$F is doubled, then the energy stored in it becomes __________

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If the charge on the condenser of $10^\circ$F is doubled, then the energy stored in it becomes four times the initial energy. "E" = q^2/(2c) `E' = (2q)^2/(2c) = 4(q^2/(2c)) E' = 4E`

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