Лабораторные работы / Решенная лабораторная по физике 25

The laboratory work N^o 25.

Defining of electron specific charge.

Had done by the student gr.__220671я__ F.N.S. Pavlov F.E.

Checked by ______________________ date ____________

Purpose:

Define one of the basic characteristics of an electron - specific charge by the method crossed fields (method of magnetrons).

The order of performing a work:

For this experiment we use the following electrical circuit.

I write all receiving data to the table 1.

Table 1.

№	UA1		UA2			UA3
	I	Ia	I		Ia	I	Ia
1	0.02	22*10-6	0.02		36*10-6	0.02	48*10-6
2	0.04	22*10-6	0.04		35*10-6	0.04	47.5*10-6
3	0.06	19*10-6	0.06		32*10-6	0.06	45*10-6
4	0.07	11*10-6	0.07		29*10-6	0.07	42*10-6
5	0.08	7*10-6	0.08		20*10-6	0.08	31*10-6
6	0.1	5*10-6	0.1		13*10-6	0.1	20*10-6
7	0.12	4*10-6	0.12		10*10-6	0.12	14*10-6
8	0.14	3*10-6	0.14		7*10-6	0.14	11*10-6
9	0.16	2.8*10-6	0.16		5.8*10-6	0.16	9*10-6
10	0.18	2.4*10-6	0.18		5*10-6	0.18	7*10-6
11	0.2	2*10-6	0.2		2.4*10-6	0.2	5*10-6
e/m
Experimentally <e/m> =				Tabular <e/m>=1.76*1011

For receiving a I_kr I use a following plot.

In this work we use following formula: , where

Conclusion:

So we have define one of the basic characteristics of the electron - specific charge by the method crossed fields._lihylhlhlkh