本题目来源于试卷: Physics Unit20: Magnetism，类别为 通用国际物理
[单选题]
What is the magnetic field at t:g8zy 8pdu a./f mc)t/wc7bvbv ou2f 5lxb+nnn+ xawy 4) 9jt:; u9zixhe center of a circular loop of wire of radius 4.0 cm when a currenl xu: ib+w9nxn9; ytj)x a+zn4t of 2.0 A flows in the wire?
A. $1.3 \times 10^{-6} \; T$
B. $3.1 \times 10^{-6} \; T$
C. $1.3 \times 10^{-5} \; T$
D. $3.1 \times 10^{-5} \; T$
参考答案: D
本题详细解析:
暂无
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