[問題] 電磁學-靜電場問題
題目:長度為2L的細長直導體棒,其上電荷為均勻分佈,且線電荷密度為
長數ρ,請問此導體的絕對電位為何?(absolute potential)
問題:我不太明白....電位能不是都是相對的嗎?
為何會有絕對電位的說法呢?
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