霍尔效应法测螺线管磁场-实验报告

实验数据处理

1.霍尔电势差U与螺线管通电电流Im的关系图（x=17.0cm处）：

0 50 0 22.2

100 150 44.1 66.1

200

250

300 132

350 154.1

400 176

450 198

500 220

88.1 110.1

U/mV Im/mA

直线的斜率K'=0.4301；相关系数r=1

L=26.0±0.1cm,N=(3000±20)匝，平均直径D=3.5±0.1cm µ。=4π×10*-7H/m

KL^2D^2K=30.01(V/T)

。N

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2.通电螺线管内磁感应强度分布测定（Im=250mA） 螺线内磁感应强度B与位置刻度X的关系

x/cm

U1＇/mV U2＇/mV U＇/mV 1 1.5 2 2.5 3 3.5 4

9.6 13.8 20.5 30.9 44.8 60.8 74

-10.1 -14.6 -21.3 -31.7 -45.5 -61.6 -74.9

B/mT

0.34 0.47 0.7 1.04 1.5 2.04 2.48

10.1 14.2 20.9 31.3 45.15 61.2 74.45

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4.5 83.3 5 89.8 5.5 93.4 6 95.9 6.5 97.7 7 98.8 7.5 100.8 8 101.4 10 105.2 14 106.5 16 107.3 21 106.5 24 104.8 25 102.3 25.5 100.5 26 98.7 26.5 96.6 27 93.9 27.5 89.2 28 82.3 28.5

70.9

-84.1 83.7 -90.7 90.25 -94.2 93.8 -96.5 96.2 -98.6 98.15 -98.6 98.7 -101.1 100.95 -102.3 101.85 -106 105.6 -107.1 106.8 -107.8 107.55 -106.8 106.65 -105.1 104.95 -102.6 102.45 -100.9 100.7 -99 98.85 -97 96.8 -94.2 94.05 -89.7 89.45 -82.9 82.6 -71.5

71.2

精品资料2.80 3.01 3.12 3.21 3.27 3.29 3.36 3.39 3.52 3.55 3.58 3.55 3.5 3.41 3.36 3.29 3.23 3.13 2.98 2.75 2.37

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29 29.5 30

55.8 39.8 25.9

-56.3 -40.5 -26.7

56.05 40.15 26.3

1.87 1.34 0.88

B/mT X/cm

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