charge by rubbing點解一定要insulator,用metal會點?
2007-03-26 18:57:11 · 1 個解答 · 發問者 2003 2 in 科學 ➔ 其他：科學
Metals are good conductors of electricity. The large amount of free electrons present in the metal would neutralize any charges produced.
2007-03-27 18:41:51 · answer #1 · answered by 天同 7 · 0⤊ 0⤋