CN210836757U

CN210836757U - High school physics electromagnetism teaching aid

Info

Publication number: CN210836757U
Application number: CN201920906721.7U
Authority: CN
Inventors: 赵家一
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-06-23
Anticipated expiration: 2029-06-17

Abstract

The utility model discloses a high school physics electromagnetism teaching aid, which comprises a base and a cover, wherein the middle part of the upper surface of the base is fixedly provided with a mounting seat, the middle part of the mounting seat is inserted with a support, the lower end of the support is inserted into a mounting hole of the mounting seat, the upper end of the support is connected with a lifting ring, the lower part of the lifting ring is connected with a tension meter, and a wire ring is hung on a hook of the tension meter; a first uniform magnetic field is arranged on the left side of the base, and a second uniform magnetic field is arranged on the right side of the upper surface of the base; a bracket placing groove is formed in the left side of the base, a tension meter placing groove is formed in the right side of the bracket placing groove, and a wire ring placing groove is formed in the upper side of the tension meter placing groove; the upper side of the mounting seat is provided with a battery box, and the lower side of the mounting seat is provided with a sliding rheostat; the battery box, the slide rheostat, the first electrode rod and the second electrode rod are electrically connected through conducting wires. The utility model discloses convenient to use is convenient for deposit, can demonstrate the relation between ampere power and magnetic field intensity, current strength and the effective cutting length, helps the student to the understanding and the grasp of ampere power.

Description

High school physics electromagnetism teaching aid

Technical Field

The utility model relates to a physics teaching demonstration utensil specifically is a high school physics electromagnetism teaching aid.

Background

In high school physics teaching, electromagnetism is an important chapter that students have difficulty understanding. The principle of the magnetic electrification discovered by England scientists Faraday is that when a part of conductors of a closed circuit do cutting magnetic induction line movement, the phenomenon that current is generated on the conductors is called electromagnetic induction phenomenon; electromagnetic is that if a straight metal wire is passed through an electric current, the space around the wire will produce a circular magnetic field. Teachers often need to use teaching aids to visually demonstrate electromagnetic phenomena during teaching so as to deepen understanding of students.

An existing ampere force tester with the patent number of CN 203204896U can measure the ampere force F applied to a coil by arranging a static sensor, and can also verify the relationship between the ampere force F and the current intensity I by changing the magnitude of an external current I, but cannot verify the relationship between the ampere force F and the magnetic field intensity B and the effective length L of a cutting magnetic induction wire, and occupies a large space when not in use, and accessories are easily damaged. Therefore, we propose a teaching aid for physics and electromagnetism in high school.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high school physics teaching aid to solve the device and can't verify the ampere power and magnetic field intensity and cut the effective length between the line of magnetic induction the relation, and occupation space is big when the above-mentioned device is deposited, lead to the problem that the accessory damaged easily.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a high school physics electromagnetism teaching aid comprises a base and a cover, wherein a mounting seat is fixedly mounted in the middle of the upper surface of the base, a support is inserted in the middle of the mounting seat, the lower end of the support is inserted into a mounting hole of the mounting seat, the upper end of the support is connected with a hanging ring, the lower part of the hanging ring is connected with a tension meter, and a wire ring is hung on a hook of the tension meter; a first uniform magnetic field is arranged on the left side of the base and consists of two strong magnets, S poles and N poles of the two strong magnets are oppositely arranged, a second uniform magnetic field is arranged on the right side of the upper surface of the base and consists of two common magnets, and the S poles and the N poles of the two common magnets are oppositely arranged; a bracket placing groove is formed in the left side of the base, a tension meter placing groove is formed in the right side of the bracket placing groove, and a wire ring placing groove is formed in the upper side of the tension meter placing groove; a battery box is arranged on the upper side of the mounting seat, and a sliding rheostat is arranged on the lower side of the mounting seat; the wire ring is composed of an insulating rod, a first electrode rod, a second electrode rod and a conductive rod, wherein a hanging ring is arranged in the middle of the insulating rod, through holes are formed in the upper end and the lower end of the first electrode rod and the lower end of the second electrode rod, two ends of the insulating rod penetrate through the through holes in the upper ends of the first electrode rod and the second electrode rod respectively, and two ends of the conductive rod penetrate through the through holes in the lower ends of the first electrode rod and the second electrode rod respectively; the battery box, the slide rheostat, the first electrode rod and the second electrode rod are electrically connected through a lead.

Preferably, the rotary seat is arranged on the lower surface of the mounting seat, so that the support can rotate through the rotary seat without being inserted again, and the use is convenient.

Preferably, the support placing groove, the tension meter placing groove and the wire ring placing groove are internally provided with fixing clamps, so that the articles in the three placing grooves can be placed more stably, and the damage to the articles caused by random shaking is avoided.

Preferably, the two ends of the insulating rod and the two ends of the conducting rod are provided with limiting devices, and the insulating rod and the conducting rod can be placed to be separated from the through hole of the electrode rod.

Preferably, the surface of the conductive rod is marked with scales, so that the effective cutting length of the conductive rod can be conveniently observed and measured.

The beneficial effects of the utility model reside in that:

1. the utility model can adjust the current intensity through the slide rheostat, and then measure the ampere force before and after changing the current intensity through the tension meter, thereby verifying the influence of the current intensity on the ampere force; the ampere force in two different magnetic fields can be measured by setting the first uniform magnetic field and the second uniform magnetic field, so that the influence of the magnetic field strength on the ampere force is verified; the effective length of the conductive rod in the magnetic field can be changed by adjusting the positions of the first electrode rod and the second electrode rod, so that the influence of the effective length of the cutting magnetic induction line on the ampere force is verified;

2. the utility model discloses a set up support standing groove, tensiometer standing groove, wire loop standing groove, can put into the standing groove with support, tensiometer and wire loop and accomodate to accomplish through covering the lid and accomodate, thereby be convenient for deposit, and can effectively protect the accessory not damaged.

Drawings

Fig. 1 is a schematic structural diagram of the usage state of the present invention.

Fig. 2 is a top sectional view of the storage state of the present invention.

Fig. 3 is a schematic structural view of the wire loop of the present invention.

In the figure: the device comprises a base 1, a mounting seat 2, a support 3, a battery box 4, a sliding rheostat 5, a lifting ring 6, a tension meter 7, a wire ring 8, a first uniform magnetic field 9, a second uniform magnetic field 10, a cover 11, a support placing groove 12, a tension meter placing groove 13, a wire ring placing groove 14, an insulating rod 81, an electrode rod I82, an electrode rod II 83, a conductive rod 84 and a hanging ring 85.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-3, a teaching aid for physics and electromagnetism in high school comprises a base 1 and a cover 11, wherein a mounting seat 2 is fixedly installed in the middle of the upper surface of the base 1, a rotating seat is installed on the lower surface of the mounting seat 2, a support 3 is inserted in the middle of the mounting seat 2, the lower end of the support 3 is inserted into a mounting hole of the mounting seat 2, the support 3 can rotate through the rotating seat below the mounting seat 2, the use is convenient, the upper end of the support 3 is connected with a hanging ring 6, the lower part of the hanging ring 6 is connected with a tension meter 7, and a wire ring 8 is hung on a hook; a first uniform magnetic field 9 is arranged on the left side of the base 1, the first uniform magnetic field 9 is composed of two strong magnets, S poles and N poles of the two strong magnets are oppositely arranged, a second uniform magnetic field 10 is arranged on the right side of the upper surface of the base 1, the second uniform magnetic field 10 is composed of two common magnets, and the S poles and the N poles of the two common magnets are oppositely arranged; the left side of the base 1 is provided with a support placing groove 12, the right side of the support placing groove 12 is provided with a tension meter placing groove 13, the upper side of the tension meter placing groove 13 is provided with a wire ring placing groove 14, and the support placing groove 12, the tension meter placing groove 13 and the wire ring placing groove 14 are all internally provided with a fixing clamp, so that articles in the three placing grooves can be placed more stably, and the articles are prevented from being damaged due to random shaking; the upper side of the mounting seat 2 is provided with a battery box 4, and the lower side of the mounting seat 2 is provided with a sliding rheostat 5.

The wire ring 8 is composed of an insulating rod 81, a first electrode rod 82, a second electrode rod 83 and a conductive rod 84, wherein a hanging ring 85 is arranged in the middle of the insulating rod 81, through holes are formed in the upper end and the lower end of the first electrode rod 82 and the upper end and the lower end of the second electrode rod 83 respectively, two ends of the insulating rod 81 penetrate through the through holes in the upper ends of the first electrode rod 82 and the second electrode rod 83 respectively, limiting devices are arranged at two ends of the insulating rod 81 and can prevent the insulating plate 81 from falling off from the through holes, two ends of the conductive rod 84 penetrate through the through holes in the lower ends of the first electrode rod 82 and the second electrode rod 83 respectively, the limiting devices are also arranged at two ends of the conductive rod 84 and can prevent the conductive rod 84 from falling off from the through holes; the battery box 4, the slide rheostat 5, the first electrode rod 82 and the second electrode rod 83 are electrically connected through conducting wires.

The utility model discloses a theory of operation:

when the novel battery box is used, a battery is arranged in the battery box 4, then the sliding rheostat 5 is adjusted, the numerical value of the tension meter 7 at the moment is observed, then the sliding rheostat 5 is adjusted again, the current intensity at the moment is changed, the numerical value of the tension meter 7 is observed again, and the influence of the current intensity I in the formula on the ampere force F can be verified according to the formula F (BIL); the positions of the first electrode rod 82 and the second electrode rod 83 can be adjusted without changing the current intensity, so that the effective length value of the conducting rod 84 is changed, and the influence of the effective length L on the ampere force F can be verified according to the measured values of the tensiometers on the front side and the rear side; the current intensity and the effective length are not changed, the wire loop 8 is respectively arranged in the first uniform magnetic field 9 and the second uniform magnetic field 10, the ampere force change is observed twice, and the influence of the magnetic field intensity B on the ampere force F can be verified.

Further, unless otherwise expressly stated or limited, the above-described fixed mounting is to be understood in a broad sense, and may be, for example, welded, glued, or integrally formed as is conventional in the art.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a physics electromagnetism teaching aid in high school, includes base (1), lid (11), its characterized in that: the middle part of the upper surface of the base (1) is fixedly provided with a mounting seat (2), the middle part of the mounting seat (2) is inserted with a support (3), the lower end of the support (3) is inserted into a mounting hole of the mounting seat (2), the upper end of the support (3) is connected with a hanging ring (6), the lower part of the hanging ring (6) is connected with a tension meter (7), and a hook of the tension meter (7) is hung with a wire ring (8); a first uniform magnetic field (9) is arranged on the left side of the base (1), the first uniform magnetic field (9) is composed of two strong magnets, S poles and N poles of the two strong magnets are oppositely arranged, a second uniform magnetic field (10) is arranged on the right side of the upper surface of the base (1), the second uniform magnetic field (10) is composed of two common magnets, and the S poles and the N poles of the two common magnets are oppositely arranged; a bracket placing groove (12) is formed in the left side of the base (1), a tension meter placing groove (13) is formed in the right side of the bracket placing groove (12), and a wire ring placing groove (14) is formed in the upper side of the tension meter placing groove (13); a battery box (4) is arranged on the upper side of the mounting seat (2), and a slide rheostat (5) is arranged on the lower side of the mounting seat (2); the wire ring (8) is composed of an insulating rod (81), a first electrode rod (82), a second electrode rod (83) and a conductive rod (84), wherein a hanging ring (85) is arranged in the middle of the insulating rod (81), through holes are formed in the upper end and the lower end of the first electrode rod (82) and the second electrode rod (83), two ends of the insulating rod (81) penetrate through the through holes in the upper ends of the first electrode rod (82) and the second electrode rod (83), and two ends of the conductive rod (84) penetrate through the through holes in the lower ends of the first electrode rod (82) and the second electrode rod (83); the battery box (4), the slide rheostat (5), the first electrode rod (82) and the second electrode rod (83) are electrically connected through conducting wires.

2. The teaching aid of physics of high school according to claim 1, characterized by: the lower surface of the mounting seat (2) is provided with a rotating seat.

3. The teaching aid of physics of high school according to claim 1, characterized by: fixing clips are arranged in the support placing groove (12), the tension meter placing groove (13) and the wire ring placing groove (14).

4. The teaching aid of physics of high school according to claim 1, characterized by: and limiting devices are arranged at two ends of the insulating rod (81) and the conductive rod (84).

5. The teaching aid of physics of high school according to claim 1, characterized by: the surface of the conductive rod (84) is marked with length scale marks.