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用霍耳元件测量通电螺线管磁场分布是高校理工科物理实验教学大纲中的一个重要实验,目前很多学校仍继续给学生开这个实验。该实验需要考虑副效应的影响,在实验中要考虑的副效应主要有以下四点:①爱廷豪森效应U_E;②能斯脱效应U_N;③里纪·勒杜克效应U_R;④不等位电位差U_0。为了消除副效应的影响,根据副效应的特点,在维持控制电流I和磁场B的大小不变的情况
The use of Hall elements to measure the magnetic field distribution of the energized solenoids is an important experiment in the syllabus of physics experiments in colleges and universities. At present, many schools continue to give students this experiment. This experiment needs to consider the influence of side effects. The following side effects to be considered in the experiment mainly include the following four points: 1 Atinhausen effect U_E; 2 Nernst effect U_N; 3 Ricoh Leduc effect U_R; 4 No Equal potential difference U_0. In order to eliminate the influence of side effects, the size of the control current I and the magnetic field B are kept constant according to the characteristics of the side effects.