問題詳情

34. Suppose two parallel plates in Fig. 4, cach has an areaof 100 cm2and are 0.1 cm apart. The capacitor is connectedto a power supply and charged to a potential differenceV0 = 3000 V. It is then disconnected from the power supply.Which of the following values is closest to the total energy(U) stored in the capacitor in J?


(A)

 
(B)


(C)


(D)

 
(E)

參考答案

答案：E
難度：計算中-1
書單：沒有書單，新增