A direct I flows in a stringht wire of length 2L. Find the magnetic flux
density B at a point located at a distance r from the wire in the bisecting
plane: (a) by determining the vector magnetic potential A first, (b) by
applying 比爾沙瓦定律
麻煩各位大大
比較急於知道a小題~
感恩＊*ˋ( ￣▽￣)ˊ＊*
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