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A capacitor of capacitance $100 \mu F$ is connected to a discharge tube. The capacitor is charged by a $3 \;V$ battery (as shown in the given figure). The total energy stored in the capacitor is discharged through the discharge tube in 0.5 ms.What is the power rating of the discharge tube?

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(B) 0.90 W
Hence B is the correct answer.
answered Jun 22, 2014 by meena.p

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