[問題] 請問一題有關電感的問題
【出處】考古題
【題目】A current sourse is userd to charge a coil inductor.
If the coil is compressed to half of its original length,
which quantity will not be doubled?
(A)Inductance of the coil
(B)Charge time of the coil
(C)Stored energy of the coil after it is charged
(D)Megnetic fieled in the coil
(E)None of the above
【瓶頸】解答答案是寫C，但這四項看起來都會變成2倍
還是其實是我C選項理解錯誤
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