CN202956967U - Electro-magnetic induction demonstrator - Google Patents
Electro-magnetic induction demonstrator Download PDFInfo
- Publication number
- CN202956967U CN202956967U CN 201220610143 CN201220610143U CN202956967U CN 202956967 U CN202956967 U CN 202956967U CN 201220610143 CN201220610143 CN 201220610143 CN 201220610143 U CN201220610143 U CN 201220610143U CN 202956967 U CN202956967 U CN 202956967U
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- guide rail
- power supply
- groove
- electro
- chock
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Abstract
The utility model provides a novel electro-magnetic induction demonstrator which is characterized by comprising a power supply, an electromagnet, a switch, a guide rail, wooden pads, a conductor rod, a graduated scale, grooves and wires. The power supply comprises a DC (direct current) 12V power supply and a J1203 type storage battery, and the demonstrator is connected with the DC 12V power supply to form the electromagnet to provide an electro-magnetic field; the guide rail is connected with the J1203 type storage battery and the switch; the guide rail is arranged on the wooden pads, three grooves a, b and c are formed on each wooden pad; the distance between the groove a and the groove b is 10cm and the distance between the groove a and the groove c is 13cm, and the three grooves are used for fixing the position of the guide rail and change the length of the electrified portion of the wires; the conductor rod is an aluminum pipe or a copper bar and has a length of 16-17cm; and the graduated scale is fixed on the wooden pads. By means of the settings above, the electro-magnetic induction demonstrator can perform quantitative and qualitative analysis of Ampere force simultaneously, thereby improving experimental results.
Description
Technical field
The utility model relates to a kind of electromagnetic induction demonstration device, especially can change the electromagnetic induction demonstration device of direction of current.
Background technology
The people teaches edition regular senior secondary school's curricular standard experiment textbook physics to take as an elective course the 84th page of Fig. 3 .2-1 of 3-1 for probe into the lecture experiment that affects the electrified wire stress factor in uniform magnetic field. and this experiment can only qualitatively illustrate: suffered Ampère force F is relevant with conductor length L and electric current I for electrified wire; And length one regularly, and electric current is larger, and the suffered Ampère force of wire is larger; Regularly, electrified wire is longer for electric current one, and Ampère force is larger.Can not quantitative test Ampère force size and the relation of the two.
Summary of the invention
For solve in above-mentioned demonstration device can not quantitative test Ampère force magnitude relationship technical matters, the utility model provides a kind of novel electromagnetic induction demonstration device, qualitative analysis further can be become to quantitative test.
The utility model solves the technical scheme that its technical matters adopts: a kind of electromagnetic induction demonstration device, it is characterized in that, it comprises power supply, electromagnet, guide rail, telegraph key, chock, groove, rule and stub, described power supply comprises direct current 12V power supply and J1203 type accumulator, and this demonstration device provides electromagnetic field by with direct current 12V power supply, being connected to form electromagnet; Guide rail is connected with J1203 type accumulator and telegraph key, guide rail is placed on chock, wherein above every chock, has three groove a, b, c, and the distance between ab is 10cm, distance between ac is 13cm, in order to the position of fixed guide and the length of change wire energising part; Aluminum pipe or copper rod for stub, length is 16cm-17cm, rule is fixed on chock.
The beneficial effects of the utility model are, can be in the qualitative analysis Ampère forces, can the quantitative test Ampère force, and improved experimental result.
The accompanying drawing explanation
Fig. 1 is the structural drawing of demonstration device of the present utility model.
1.J1209 teaching of senior high school power supply in figure, 2.J2431 electromagnetic induction demonstration device, 3. accumulator, 4. telegraph key, 5. guide rail, 6. chock, 7. stub, 8. rule, 9. groove, 10. wire
Embodiment
As shown in Figure 1: J1209 teaching of senior high school power supply (1) is connected to form electromagnet with direct current 12V and J2431 electromagnetic induction demonstration device (2) magnetic field is provided; Guide rail (5) is connected with J1203 type accumulator (3) and telegraph key (4), guide rail (5) is placed on chock (6), wherein often certainly above chock (6), have three groove a, b, c (9), ab=10cm wherein, ac=13cm, in order to the position of fixed guide (5) and the length of change stub (7) energising part; Aluminum pipe (or copper rod) for stub (7), be about 16-17cm, and rule (8) is fixed on chock (6).
Experimental principle:
Stub (being made as AB) is placed on guide rail in magnetic field, closed telegraph key, AB becomes an electrical conductor, under the magnetic field force effect, moves.If in motion, suffered Ampère force is F
Peace, friction force is f, and the distance that AB moves in magnetic field is So, and from setting in motion to stopping, total distance of motion is S, by theorem of kinetic energy: F
PeaceS
0-fs=0.
If each stub is from the same position setting in motion, So is constant, and f is constant again, so,
That is: F
Peace∝ S, as long as the relation of research S and I (or L) can be known F
PeaceRelation with I (or L).
Experimental procedure:
One. keep guide rail spacing L=13cm constant, checking F
Peace∝ I
1. stub is placed on guide rail, guide rail connects accumulator 4V voltage, closed telegraph key, stub motion, from rule read rod motion apart from S
1.
2. stub is put in to same position on guide rail, guide rail connects accumulator 6V voltage, closed telegraph key, and rod motion, read apart from S
2.
3. checking: in the scope allowed in error, L is certain, S ∝ U, again:
R is certain, I ∝ U, F
Peace∝ I
Two. keep I (connecing the 6V accumulator) constant, checking F
Peace∝ L
1. same step 1,2.
2. the guide rail spacing is become to 10cm, stub is put in same position on guide rail, closed telegraph key, and rod motion, read apart from S
3.
3. checking: in the scope allowed in error, I is certain, S ∝ L, that is: F peace ∝ L.
Test improved advantage:
1. equipment is drawn materials easily, simpler production.
2. the visuality of experiment is strong, and the student can directly observe.
3. experimental data can directly be read, and is convenient to measure.
4. experiment is stable, and success ratio is very high.
Points for attention:
1. because the battery discharging of use in experiment is very fast and discharge current is larger, each experiment finishes to disconnect in time telegraph key.
2. guide rail and stub will be tried one's best round and smooth and be contacted good.
3. guide rail is wanted level.
In addition, if electromagnetic induction demonstration device one end is paved, reduce gradually the angle of B and I (or L), can verify that the F peace reduces gradually, illustrates when B ⊥ I (or L) F
PeaceMaximum; When B//I (or L), F
PeaceMinimum.
Utilize this device by changing the direction of electric current (or magnetic field), also can verify that left hand is surely other.
Claims (1)
1. an electromagnetic induction demonstration device, it is characterized in that, it comprises power supply, electromagnet, telegraph key, guide rail, chock, stub, rule, groove and wire, described power supply comprises direct current 12V power supply and J1203 type accumulator, and this demonstration device provides electromagnetic field by with direct current 12V power supply, being connected to form electromagnet; Guide rail is connected with J1203 type accumulator and telegraph key, guide rail is placed on chock, wherein above every chock, has three groove a, b, c, and the distance between ab is 10cm, distance between ac is 13cm, in order to the position of fixed guide and the length of change stub energising part; Aluminum pipe or copper rod for stub, length is 16cm-17cm, rule is fixed on chock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220610143 CN202956967U (en) | 2012-11-07 | 2012-11-07 | Electro-magnetic induction demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220610143 CN202956967U (en) | 2012-11-07 | 2012-11-07 | Electro-magnetic induction demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202956967U true CN202956967U (en) | 2013-05-29 |
Family
ID=48462527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220610143 Expired - Fee Related CN202956967U (en) | 2012-11-07 | 2012-11-07 | Electro-magnetic induction demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202956967U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064089A (en) * | 2014-07-03 | 2014-09-24 | 张新宇 | Comprehensive experiment exploration platform for Ampere force |
| CN106057041A (en) * | 2016-06-15 | 2016-10-26 | 蒲元昊 | Experiment instrument capable of solving problem of electro-magnetic induction and operation method thereof |
| CN107067914A (en) * | 2017-05-15 | 2017-08-18 | 天津中德应用技术大学 | Electromagnetic induction and EMR electromagnetic resonance contrast experiment system and its experimental method |
| CN107578681A (en) * | 2017-11-01 | 2018-01-12 | 张恺頔 | A kind of senior middle school's electromagnetic induction integrated experimental device |
| CN108682247A (en) * | 2018-08-09 | 2018-10-19 | 浙江大学城市学院 | A kind of copper rod stress demonstrating and quantitative measurment experiment instrument in magnetic field |
-
2012
- 2012-11-07 CN CN 201220610143 patent/CN202956967U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064089A (en) * | 2014-07-03 | 2014-09-24 | 张新宇 | Comprehensive experiment exploration platform for Ampere force |
| CN106057041A (en) * | 2016-06-15 | 2016-10-26 | 蒲元昊 | Experiment instrument capable of solving problem of electro-magnetic induction and operation method thereof |
| CN107067914A (en) * | 2017-05-15 | 2017-08-18 | 天津中德应用技术大学 | Electromagnetic induction and EMR electromagnetic resonance contrast experiment system and its experimental method |
| CN107578681A (en) * | 2017-11-01 | 2018-01-12 | 张恺頔 | A kind of senior middle school's electromagnetic induction integrated experimental device |
| CN108682247A (en) * | 2018-08-09 | 2018-10-19 | 浙江大学城市学院 | A kind of copper rod stress demonstrating and quantitative measurment experiment instrument in magnetic field |
| CN108682247B (en) * | 2018-08-09 | 2023-09-15 | 浙江大学城市学院 | Experimental instrument for demonstrating stress of copper bar in magnetic field and quantitatively measuring copper bar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Wang Yaofu Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130529 Termination date: 20131107 |