| 圆锥曲线电流在焦点处的磁感应强度 |
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| 引用本文： | 卢芳,成泰民,王金刚. 圆锥曲线电流在焦点处的磁感应强度[J]. 物理与工程, 2007, 17(2): 36-38 |
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| 作者姓名： | 卢芳 成泰民 王金刚 |
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| 作者单位： | 1. 沈阳航空工业学院,辽宁,沈阳,110043
2. 沈阳化工学院数理系,辽宁,沈阳,110142 |
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| 摘 要： | 利用极坐标系及矢量代数对极坐标系下的平面曲线电流，在其极点处的磁感应强度进行了推导，得到了此类问题的通用公式．利用这一通用公式讨论了圆锥曲线电流在其极点（或者焦点）处的磁感应强度，并利用Mathematica5．0对所得结论进行了分析．
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| 关 键 词： | 极坐标 极点 圆锥曲线电流 磁感应强度 |
| 收稿时间： | 2007-01-15 |
THE MAGNETIC INDUCTION AT THE FOCUS OF CONIC-ELECTRIC-CURRENT |
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| Lu Fang,Cheng Taimin,Wang Jingang. THE MAGNETIC INDUCTION AT THE FOCUS OF CONIC-ELECTRIC-CURRENT[J]. Physics and Engineering, 2007, 17(2): 36-38 |
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| Authors: | Lu Fang Cheng Taimin Wang Jingang |
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| Affiliation: | 1. Shenyang Institute of Aeronotical Engineering, Shenyang, Liaoning 110043;2 Department of Mathematics and Physics, Shenyang Institute of Chemical Technology, Shenyang, Liaoning 110142 |
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| Abstract: | Making use of the polar coordinates and vector-algebra carried out the universal formula of the magnetic induction intensity at the focus of the polar coordinates plane curve electric current. Discussing the magnetic induction intensity at the pole (or focus) of the conic- electric-current, and analysis the conclusion through Mathematica5.0. |
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| Keywords: | Mathematica 5.0 |
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