15299

Снятие кривой намагничивания ферромагнитного образца

Лабораторная работа

Физика

В результате проделанной работы я познакомился с методами получения кривой намагничивания ферромагнитного образца, построил графики зависимости В(В0) и М(В0). Получившаяся кривая практически совпадает с табличными значениями. Не значительные расхождения свазаны с наличием погрешностей в данной лабораторной работе

Русский

2013-06-11

69.5 KB

6 чел.

ОТЧЕТ

по лабораторной работе №18 а

“Снятие кривой намагничивания ферромагнитного образца”

  1.  Расчетные формулы:

  1.  Схема электрической цепи:

  1.  Средства измерения, их характеристики:

Наименование средства измерения

Предел измерений или номинальное значение

Цена деления шкалы

Класс точности

Предел основной погрешности

Миллиамперметр

Гальвонометр

300mA

25

2mA

1

1mA

0,5

  1.  Параметры установки:

N1

D1

S

N2

Rk

Rr

RM

k

901

150,05

мм

240,5

4104

14000 Ом

1,5

  1.  Расчет постоянных и C:

         ==0,0000024,

         C==0,000228658 Тл/мм

  1.  Результаты наблюдений:

Намагничивающий ток I1, мА

Индукция В, намагничивающего поля, Тл

Отброс  вправо, дел

Отброс   влево, дел

дел

Индукция В магнитного поля в образце, Тл

Относительная магнитная проницаемость 

5

0,000012

1,2

1,3

1,25

0,000285823

23,8

10

0,000024

2,5

2,6

2,55

0,000583079

24,3

15

0,000036

4,2

4,4

4,3

0,000983231

27,3

20

0,000048

5,7

5,9

5,8

0,001326219

27,6

30

0,000072

9,5

9,7

9,6

0,002195121

30,5

50

0,00012

14,4

14,6

14,5

0,003315548

27,6

70

0,000168

17,6

17,8

17,7

0,004047256

24,1

90

0,000216

19,3

19,5

19,4

0,004435975

20,5

100

0,00024

19,6

20,0

19,8

0,004527439

18,9

110

0,000264

19,9

20,3

20,2

0,004618902

17,5

120

0,000288

20,2

20,5

20,35

0,004653201

16,2

130

0,000312

20,9

21,2

21,05

0.004813262

15,4

140

0,000336

21,1

21,5

21,2

0,00484756

14,4

150

0,00036

21,2

21,7

21,45

0,004904725

13,6

  1.  Графики B=f(B0), =f(B0).
  2.  max=30,5;

B0max=0,00036 Тл;

Bmax=0,004904725 Тл;

  1.  Выводы:

В результате проделанной работы я познакомился с методами получения кривой намагничивания ферромагнитного образца, построил графики зависимости В(В0) и М(В0). Получившаяся кривая практически совпадает с табличными значениями. Не значительные расхождения свазаны с наличием погрешностей в данной лабораторной работе. Это погрешность гальванометра, рассчета сопротивления цепи, погрешность отсчитывания.


 

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