問題詳情
51. A certain capacitor has a capacitance of 5 μF. After it is charged to 5 μC and isolated, the platesare brought closer together so its capacitance becomes 10 μF. The work done by the agent is about______.
(A) −1.25 × 10–6J
(B) 8.3 × 10–7J
(C) −8.3 × 10–7J
(D) 1.25 × 10–6J
(E) −3.75 × 10–6J
參考答案
答案：A
難度：計算中-1
書單：沒有書單，新增