è§å¯å¾äº
ad导线åæ ¹çæ¶åï¼çµå¨å¿
E1=BLV
=B*ad*ÏR
=B*ad*Ï*(ab/2)
bc导线åæ ¹çæ¶åï¼çµå¨å¿
E2=BLV
=B*cd*ÏR
=B*bc*Ï*(ab/2)
æ´ä¸ªçº¿åååçæ¶åï¼çµå¨å¿
E'=E1+E2
=B*ad*Ï*(ab/2)+B*bc*Ï*(ab/2)
=B*bc*Ï*ab
=BÏS (S=ab*bc)
å½çº¿å为Nåçæ¶å
E=NE'
=NBSÏ