MindMap Gallery Ohm's law
This is a mind map about Ohm's law. The main contents include: series and parallel connection of resistors, measuring resistance, Ohm's law and its application, and exploring the relationship between current, voltage, and resistance.
Edited at 2024-10-17 11:58:12Ceci est le chapitre 5 du livre de l'enseignant "This Is Auth to Read", qui parle principalement de ces aspects: ① L'importance de la capacité d'apprentissage ②Comment ajouter un contexte à l'information ③Comment distinguer les connaissances et les informations Je ne vous précipite pas pour remettre en question et défier ⑤Comment utiliser des notes collantes pour mettre à niveau votre capacité d'apprentissage ⑥Pour pourquoi chasser les "biens secs" un pseudo-apprentissage?
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Il s'agit d'une carte mentale sur les 30 instructions de niveau d'alimentation de Deepseek.
Ceci est le chapitre 5 du livre de l'enseignant "This Is Auth to Read", qui parle principalement de ces aspects: ① L'importance de la capacité d'apprentissage ②Comment ajouter un contexte à l'information ③Comment distinguer les connaissances et les informations Je ne vous précipite pas pour remettre en question et défier ⑤Comment utiliser des notes collantes pour mettre à niveau votre capacité d'apprentissage ⑥Pour pourquoi chasser les "biens secs" un pseudo-apprentissage?
Afin d'aider tout le monde à utiliser Deepseek plus efficacement, une collection de Mind Map Deepseek Guide a été spécialement compilée! Cette carte mentale résume le contenu principal: liens liés à Yitu, analyse de profil DS, comparaison des routes technologiques Deepseek et ChatGpt, Guide de déploiement du modèle Deepseek et Qwen, comment gagner plus d'argent avec Deepseek, comment jouer Deepseek, Deepseek Scientific Research Applications Mows Inside Attendez, vous permettant de saisir rapidement l'essence de l'interaction AI. Qu'il s'agisse de la création de contenu, de la planification du plan, de la génération de code ou de l'amélioration de l'apprentissage, Deepseek peut vous aider à atteindre deux fois le résultat avec la moitié de l'effort!
Il s'agit d'une carte mentale sur les 30 instructions de niveau d'alimentation de Deepseek.
Ohm's law
Explore the relationship between current, voltage, and resistance
Explore the relationship between current and voltage
Experimental method: Control variable method
Control variables:
Keep the resistance constant and change the voltage
How to control
Instead of replacing the fixed value resistor, move the sliding rheostat slide to change the voltage across the custom resistor.
Function of sliding rheostat:
protection circuit
Change the voltage across the fixed value resistor
Conclusion: When the resistance is constant, the current is proportional to the voltage
Image analysis:
Explore the relationship between current and resistance
Experimental method: Control variable method
Control variables:
The control voltage remains unchanged and the resistance is changed.
How to control
Replace a different fixed-value resistor and move the sliding rheostat slide to control the voltage representation. That is, the voltage across the resistor remains unchanged.
Function of sliding rheostat:
protection circuit
Control the voltage across the fixed-value resistor to remain unchanged
Conclusion: When the voltage is constant, the current is inversely proportional to the resistance
Image analysis:
Ohm's law and its applications
content:
The current in a conductor is directly proportional to the voltage across the conductor and inversely proportional to the resistance of the conductor
expression:
subtopic
: current through a conductor
U: voltage across the conductor
R: resistance of conductor
Deformation formula:
Resistance is a property of the conductor itself. It cannot be said that resistance is related to voltage and current.
Measure resistance
Voltammetry to measure resistance
Experimental principle:
Experimental circuit diagram:
Function of sliding rheostat:
protection circuit
Change the voltage and current passing through the resistor under test
Purpose of multiple measurements: average multiple measurements to reduce errors
Notice:
If you are measuring the resistance of a small light bulb, conduct multiple measurements. The purpose is to explore the relationship between the resistance of the small light bulb and temperature, avoid chance, and obtain general rules.
Measuring resistance using voltammetry
Experimental circuit diagram:
Experimental steps:
Move the switch S to the "2" position and read the voltage indication at this time.
Turn the switch S to the "1" position and read the voltage indication value U0 at this time.
Resistor to be measured
Note: This mind map only shows one type of measurement circuit diagram, and the expressions are filled in according to the specific question type.
Measuring resistance by amperometric method
Experimental circuit diagram:
Experimental steps
Close switches S1 and S2 at the same time, and read the current value at this time.
Turn off switch S2 and read the current value at this time.
Resistor to be measured
Note: This mind map only shows one type of measurement circuit diagram, and the expressions are filled in according to the specific question type.
Resistors in series and parallel
series connection
The total resistance is greater than any individual resistance (equivalent to increasing the length of the conductor)
formula:
Series voltage divider:
In a series circuit, the distribution of voltage is proportional to the resistance
in parallel
The total resistance is smaller than any of the partial resistances (equivalent to increasing the cross-sectional area of the conductor)
formula
No need to carry
Have to carry it
Parallel shunt:
In a parallel circuit, the distribution of current is inversely proportional to the resistance
The main circuit current is distributed
Allocated is the supply voltage
Circuit diagram: