CN206711470U - Device is probed into the demonstration of the water tank type law of resistance - Google Patents
Device is probed into the demonstration of the water tank type law of resistance Download PDFInfo
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- CN206711470U CN206711470U CN201720386214.6U CN201720386214U CN206711470U CN 206711470 U CN206711470 U CN 206711470U CN 201720386214 U CN201720386214 U CN 201720386214U CN 206711470 U CN206711470 U CN 206711470U
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Abstract
The utility model is that device is probed into the demonstration of the water tank type law of resistance,Including base,Shape identical transparent the first tank and the second tank are provided with the base,The first sensitive ammeter of the first tank series connection,The second sensitive ammeter of the second tank series connection,Power supply is provided with the base,Switch is provided with the power supply,First tank and second tank are in parallel,A voltmeter in parallel on first tank,The power supply is connected with first tank,It can be contrasted using the first tank and the second tank and non-interfering parallel in experimentation,The liquid of identical inequality or the liquid that equivalent is not of the same race are added in the first tank and the second tank,And the conversion for passing through fluid temperature,It can be shown by the number of degrees of the first sensitive table and the second sensitive table and draw resistivity,Temperature,Influence of the cross-sectional area to resistance.
Description
Technical field
Educational facilities technical field is the utility model is related to, more particularly to device is probed into the demonstration of the water tank type law of resistance.
Background technology
It is Middle School Physics content that the law of resistance, which is inquired into, using Variable Control method, probes into material, length, cross-sectional area
Influence to resistance, in experiment, using wire as experiment material, wire resistance itself is very small, when closing of circuit,
Electrical current is very big, and to be taken some time during reading, and this may result in wire heating and heats up, metallic resistance rate
Change greatly therewith, very big error can be brought to experiment, meanwhile, experimentation is cumbersome uninteresting, is not easy student's understanding, therefore need
Want a kind of new teaching aid more accurately to inquire into the law of resistance while improve student interests.
Utility model content
The purpose of this utility model is in view of the shortcomings of the prior art, there is provided device is probed into the demonstration of the water tank type law of resistance.
Device, including base are probed into the demonstration of the water tank type law of resistance, be provided with the base shape identical it is transparent the
One tank and the second tank, the first sensitive ammeter of the first tank series connection, the second sensitive electric current of the second tank series connection
Table, power supply is provided with the base, switch is provided with the power supply, first tank and second tank are in parallel,
A voltmeter in parallel, the power supply are connected with first tank on first tank.
In one of the embodiments, it is provided with deep calibration in the side wall of first tank and the second tank.
In one of the embodiments, it is provided with thermometer in first tank and the second tank.
In one of the embodiments, the 3rd tank is provided with the base, is slidably set in the 3rd tank
It is equipped with two pieces of copper sheets being parallel to each other, the copper sheet top and the power sources in series.
In summary, device, including base are probed into water tank type law of resistance demonstration, and shape identical is provided with the base
Transparent the first tank and the second tank, the first sensitive ammeter of the first tank series connection, the second tank series connection second
Sensitive ammeter, power supply is provided with the base, switch, first tank and second water are provided with the power supply
Groove is in parallel, and a voltmeter in parallel, the power supply are connected with first tank on first tank, using the first tank with
Second tank and non-interfering parallel can be contrasted in experimentation, in the first tank and the second tank
The middle liquid for adding identical inequality or equivalent liquid not of the same race, and by the conversion of fluid temperature, can be by the
The number of degrees of one sensitive table and the second sensitive table show the influence for drawing resistivity, temperature, cross-sectional area to resistance.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the utility model one.
Embodiment
Below in conjunction with the accompanying drawings and embodiment is described in further detail to the utility model.
As shown in figure 1, device, including base are probed into the demonstration of the water tank type law of resistance, it is identical to be provided with shape in the base
Transparent the first tank 1 and the second tank 2, first tank 1 connected the first sensitive ammeter 3, and second tank 2 is gone here and there
Join the second sensitive ammeter 4, power supply 5 is provided with the base, switch 6, first tank 1 are provided with the power supply 5
In parallel with second tank 2, a voltmeter 7 in parallel, the power supply 5 are gone here and there with first tank 1 on first tank 1
Connection.First tank 1 and the parallel connection of the second tank 2 are contrasted circuit, and voltmeter 7 is used to control the voltage of contrast illustrative circuitry steady
It is fixed, the liquid or equivalent of identical inequality liquid not of the same race are added in the first tank 1 and the second tank 2, and pass through
The conversion of fluid temperature, it can be shown by the number of degrees of the first sensitive table and the second sensitive table and draw resistivity, temperature, cross section
Influence of the product to resistance.
In one of the embodiments, it is provided with deep calibration in the side wall of the tank 2 of the first tank 1 and second.
The convenient observation of the deep calibration of setting adds amount of liquid in the first tank 1 and the second tank 2, horizontal by adding amount of liquid display
Influence of the sectional area to resistance.
In one of the embodiments, it is provided with thermometer in the tank 2 of the first tank 1 and second.By to
The temperature comparisons of one tank 1 and the second tank 2, it can be deduced that influence of the temperature to resistance.
Experimentation is as follows：1st, the clear water under normal temperature is loaded in the first tank 1 and the second tank 2, wherein in the first tank 1
Water be the half of the water in the second tank 2, learn that the first sensitive number of degrees of ammeter 3 are less than the second sensitive number of degrees of ammeter 4, obtain
Go out under the same terms, the conclusion that resistance is inversely proportional with area；2nd, the 2 interior liquid for loading equivalent of the first tank 1 and the second tank, its
In the first tank 1 load clear water, the second tank 2 load salt solution, last first sensitive 3 and second sensitive ammeter 4 of ammeter
The number of degrees differ, and draw the conclusion that resistance is relevant with resistivity of material under the same terms；3rd, in the first tank 1 and the second tank 2
Load the clear water of equivalent, wherein the water in the first tank 1 is the cold water refrigerated, the water in the second tank 2 is the heat after heating
Water, the number of degrees of the first sensitive 3 and second sensitive ammeter 4 of ammeter differ, and show that resistance is relevant with temperature under the same terms
Conclusion.
In one of the embodiments, it is provided with the 3rd tank 8 on the base, it is slidable in the 3rd tank 8
Two pieces of copper sheets being parallel to each other 9 are provided with, the top of copper sheet 9 is connected with the power supply 5.Because copper sheet 9 is in the 3rd tank 8
Slide, copper sheet 9 is conductive, then the distance between copper sheet 9 for effective access circuit resistance length, by adjust between copper sheet 9 away from
From realizing the technique effect of slide rheostat.
In experimentation, because the 3rd tank 8 and power supply 5 are connected, the first tank 1 and the second tank 2 are in parallel, therefore add
After 3rd tank 8, the first tank 1 with as the condition of the second tank 2 in the case of the first sensitive 3 and second sensitive electric current of ammeter
The number of degrees of table 4 are identical, and experimental result shows that, when distance increases between copper sheet 9, the reading of the first sensitive ammeter 3 reduces, and works as copper
When distance reduces between piece 9, the reading increase of the first sensitive ammeter 3, when showing that condition is constant, conductor length and resistance sizes into
The conclusion of direct ratio.
A whole set of teaching aid structure is simple, is demonstrated by tank, experimental result is had more intuitive, on the other hand makes
The interesting enhancing of experiment, more conducively student are studied in depth.
A specific embodiment of the present utility model is the foregoing is only, but architectural feature of the present utility model is not limited to
This, for any those skilled in the art in field of the present utility model, the change or modification made are encompassed by this practicality newly
In the scope of the claims of type.
Claims (4)
1. device, including base are probed into the demonstration of the water tank type law of resistance, it is characterised in that：Shape identical is provided with the base
Transparent the first tank and the second tank, the first sensitive ammeter of the first tank series connection, the second tank series connection second
Sensitive ammeter, power supply is provided with the base, switch, first tank and second water are provided with the power supply
Groove is in parallel, and a voltmeter in parallel, the power supply are connected with first tank on first tank.
2. device is probed into water tank type law of resistance demonstration according to claim 1, it is characterised in that：First tank and second
Deep calibration is provided with the side wall of tank.
3. device is probed into water tank type law of resistance demonstration according to claim 1, it is characterised in that：First tank and second
Thermometer is provided with tank.
4. device is probed into water tank type law of resistance demonstration according to claim 1, it is characterised in that：Is provided with the base
Three tanks, two pieces of copper sheets being parallel to each other, the copper sheet top and the power supply are slidably provided with the 3rd tank
Series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720386214.6U CN206711470U (en) | 2017-04-13 | 2017-04-13 | Device is probed into the demonstration of the water tank type law of resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720386214.6U CN206711470U (en) | 2017-04-13 | 2017-04-13 | Device is probed into the demonstration of the water tank type law of resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206711470U true CN206711470U (en) | 2017-12-05 |
Family
ID=60455758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720386214.6U Expired - Fee Related CN206711470U (en) | 2017-04-13 | 2017-04-13 | Device is probed into the demonstration of the water tank type law of resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206711470U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108335592A (en) * | 2018-02-06 | 2018-07-27 | 陈吴瀚 | A kind of physics facility |
-
2017
- 2017-04-13 CN CN201720386214.6U patent/CN206711470U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108335592A (en) * | 2018-02-06 | 2018-07-27 | 陈吴瀚 | A kind of physics facility |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171205 Termination date: 20180413 |
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| CF01 | Termination of patent right due to non-payment of annual fee |