A certain capacitor has a capacitance of 5.0 μF. After it is charged to 5.0 μC and isolated, the plates are brought closer together so its capacitance becomes 10 μF. The work done is about 8.3×10−7 J 1.3×10−6 J 0 J −8.3×10−7 J −1.3×10−6 J
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A certain capacitor has a capacitance of . After it is charged to and isolated, the plates are brought closer together so its capacitance becomes . The work done is about