CN201477771U

CN201477771U - Experimental apparatus for verifying Lenz's law

Info

Publication number: CN201477771U
Application number: CN2009201698316U
Authority: CN
Inventors: 多斯江·佳尔木哈买提
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-09
Filing date: 2009-08-09
Publication date: 2010-05-19
Anticipated expiration: 2019-08-09

Abstract

The utility model discloses an experimental apparatus for verifying Lenz's law, which is characterized in that two binding posts of a first coil (1) are connected with an ampere meter (3), the zero-turn binding post (6) of a second coil (4) is connected with the negative electrode of a battery (5), and the 180-turn binding post (7) or the 360-turn binding post (8) or the 540-turn binding post (9) of the second coil (4) is connected with the positive electrode of the battery (5); and the outer diameter of the post body (10) of the second coil (4) is smaller than the inner diameter of the inner hole (11) of the first coil (1). In the utility model, the single-turn coil is improved into the multiple-turn coin, so the induction field is greatly enhanced, and the mutual acting force of the induction magnetic field and the original magnetic field is enhanced, thereby, the experiment effect is obvious. In addition, the second coil has three binding posts the turns of which are increased by duplication, so the experiment operator can select one of the three ones for experiment, and the operator can find the induction magnetic field is enhanced and the induction current is increased with the increase of the turn of the coil, which is helpful for verifying Lenz's law.

Description

The experimental apparatus of checking Lenz law

Technical field

The utility model relates to a kind of Experiments of Electromagnetism instrument.

Background technology

Lenz law is an electromagnetic law, and Lenz law can be expressed as: faradic magnetic field always will hinder the variation that causes faradic magnetic flux.At present, the lecture experiment of a checking Lenz law being arranged in the high school physics textbook, is to demonstrate by the variation of single turn aluminium frame magnetic flux, and its effect is undesirable.Reason be by single turn aluminium frame magnetic flux change a little less than, the induction electromotive force and the induction current of generation are little, therefore faradic magnetic field is not strong, former magnetic field and faradic the action of a magnetic field power are little, the result tests DeGrain.

Summary of the invention

The purpose of this utility model is to provide a kind of experiment effect significantly to verify the experimental apparatus of Lenz law.

Technical solution adopted in the utility model is, the experimental apparatus of this checking Lenz law, two binding posts and the reometer of first coil join, the zero circle binding post of second coil links to each other with the negative pole of battery, 180 circle binding posts of second coil or 360 circle binding posts or 540 circle binding posts link to each other with the positive pole of battery, and the external diameter of the cylinder of second coil is less than the internal diameter of the endoporus of first coil.

Owing to taked technique scheme, so the utility model equals single-turn circular coil is modified into multiturn coil, strengthened induced field greatly, increased the interaction force in induced field and former magnetic field, so experiment effect is fairly obvious.In addition, second coil is available by the binding post of three numbers of turn that are multiplied, and by experiment one by one, can find the increase along with coil turn, and induced field strengthens thereupon, and induction current increases thereupon, and is more helpful to the checking Lenz law.The utility model is simple in structure, easy and simple to handle simultaneously.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the utility model stereoscopic synoptic diagram.

Embodiment

Embodiment 1, as shown in Figure 1, the experimental apparatus of this checking Lenz law, the binding post 2 and the reometer 3 of first coil 1 join, the zero circle binding post 6 of second coil 4 links to each other with the negative pole of battery 5,180 circle binding posts 7 of second coil 4 or 360 circle binding posts 8 or 540 circle binding posts 9 link to each other with the positive pole of battery 5, and cylinder 10 external diameters of second coil 4 are less than the internal diameter of the endoporus 11 of first coil 1.

Embodiment 2, and as the experimental apparatus of embodiment 1 described checking Lenz law, battery 5 places battery series connection box 12.

Claims

1. experimental apparatus of verifying Lenz law, it is characterized in that: two binding posts (2) of first coil (1) join with reometer (3), the zero circle binding post (6) of second coil (4) links to each other with the negative pole of battery (5), 180 circle binding posts (7) of second coil (4) or 360 circle binding posts (8) or 540 circle binding posts (9) link to each other with the positive pole of battery (5), and the external diameter of the cylinder (10) of second coil (4) is less than the internal diameter of the endoporus (11) of first coil (1).

2. the experimental apparatus of checking Lenz law according to claim 1 is characterized in that: battery (5) places battery series connection box (12).