抛物线电流对称轴任意点磁场的理论计算和实验验证  

Theoretical calculations and experimental tests of magnetic field at any point of symmetric axis of parabolic current

作　　者：林乐鑫 肖化[1] 周少娜[1] 陆泽璇 

机构地区：[1]华南师范大学物理与电信工程学院,广东广州510006

出　　处：《大学物理》2014年第4期11-14,共4页College Physics

摘　　要：基于极坐标系,利用毕奥-萨伐尔定律计算出抛物线形状载流体在对称轴上任意点磁感应强度的计算公式.同时利用数据计算软件Mathematica画出相应的B-yP图.此外,借助高灵敏度的毫特斯拉计进行实验测试,所得实验数据和理论推导的吻合程度相当理想,验证了理论推导的正确性.The equation of magnetic induction in parabolic current at any point of its symmetric axis is derived by using the Biot-Savart law and its graph is also drawn by the software Mathmatica. The equation is verified by our experiment with high sensitivity Millitesla Meter.

关 键 词：毕奥-萨伐尔定律 极坐标 椭圆积分 MATHEMATICA 

分 类 号：O441[理学—电磁学]