导ä½å¨ç£åºä¸äº§çççµæµå¤§å°ï¼
ä¸ç£æåºå¼ºåº¦ä¸ºBï¼åå²å¯¼çº¿çé¿åº¦ä¸ºLï¼åå²é度为 vï¼åè·¯çæ»çµé»ä¸º R + r æå
³ã
BãLãv ä¸è
çæ¹åç¸äºåç´ã
ε = BLv
I = ε / (R + r)
I = BLv / (R + r)
温馨提示:答案为网友推荐,仅供参考