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A capacitor of capacitance 3 mu F is fir...

A capacitor of capacitance `3 mu F` is first charged by connecting it across a `10 V` battery by closing key `K_(1)`, then it is allowed to get discharged through `2 Omega` and `4 Omega` resistors by opening `K_(1)` and closing the key `K_(2)`. The total energy dissipated in the `2 Omega` resistor is equal to

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