Widerstand eines Gerätes
About points...
We associate a certain number of points with each exercise.
When you click an exercise into a collection, this number will be taken as points for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit the number of points for the exercise in the collection independently, without any effect on "points by default" as represented by the number here.
That being said... How many "default points" should you associate with an exercise upon creation?
As with difficulty, there is no straight forward and generally accepted way.
But as a guideline, we tend to give as many points by default as there are mathematical steps to do in the exercise.
Again, very vague... But the number should kind of represent the "work" required.
When you click an exercise into a collection, this number will be taken as points for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit the number of points for the exercise in the collection independently, without any effect on "points by default" as represented by the number here.
That being said... How many "default points" should you associate with an exercise upon creation?
As with difficulty, there is no straight forward and generally accepted way.
But as a guideline, we tend to give as many points by default as there are mathematical steps to do in the exercise.
Again, very vague... But the number should kind of represent the "work" required.
About difficulty...
We associate a certain difficulty with each exercise.
When you click an exercise into a collection, this number will be taken as difficulty for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit its difficulty in the collection independently, without any effect on the "difficulty by default" here.
Why we use chess pieces? Well... we like chess, we like playing around with \(\LaTeX\)-fonts, we wanted symbols that need less space than six stars in a table-column... But in your layouts, you are of course free to indicate the difficulty of the exercise the way you want.
That being said... How "difficult" is an exercise? It depends on many factors, like what was being taught etc.
In physics exercises, we try to follow this pattern:
Level 1 - One formula (one you would find in a reference book) is enough to solve the exercise. Example exercise
Level 2 - Two formulas are needed, it's possible to compute an "in-between" solution, i.e. no algebraic equation needed. Example exercise
Level 3 - "Chain-computations" like on level 2, but 3+ calculations. Still, no equations, i.e. you are not forced to solve it in an algebraic manner. Example exercise
Level 4 - Exercise needs to be solved by algebraic equations, not possible to calculate numerical "in-between" results. Example exercise
Level 5 -
Level 6 -
When you click an exercise into a collection, this number will be taken as difficulty for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit its difficulty in the collection independently, without any effect on the "difficulty by default" here.
Why we use chess pieces? Well... we like chess, we like playing around with \(\LaTeX\)-fonts, we wanted symbols that need less space than six stars in a table-column... But in your layouts, you are of course free to indicate the difficulty of the exercise the way you want.
That being said... How "difficult" is an exercise? It depends on many factors, like what was being taught etc.
In physics exercises, we try to follow this pattern:
Level 1 - One formula (one you would find in a reference book) is enough to solve the exercise. Example exercise
Level 2 - Two formulas are needed, it's possible to compute an "in-between" solution, i.e. no algebraic equation needed. Example exercise
Level 3 - "Chain-computations" like on level 2, but 3+ calculations. Still, no equations, i.e. you are not forced to solve it in an algebraic manner. Example exercise
Level 4 - Exercise needs to be solved by algebraic equations, not possible to calculate numerical "in-between" results. Example exercise
Level 5 -
Level 6 -
Question
Solution
Short
Video
\(\LaTeX\)
Need help? Yes, please!
The following quantities appear in the problem:
elektrische Stromstärke \(I\) / elektrische Spannung \(U\) / elektrischer Widerstand \(R\) /
The following formulas must be used to solve the exercise:
\(U=RI \quad \) \(\hat u = u \cdot \sqrt{2} \quad \)
No explanation / solution video to this exercise has yet been created.
Visit our YouTube-Channel to see solutions to other exercises.
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Visit our YouTube-Channel to see solutions to other exercises.
Don't forget to subscribe to our channel, like the videos and leave comments!
Exercise:
Ein Gerät wird bei uns an die Steckdose angeschlossen und ein Messgerät zeigt anschliess dass die Spitzenstromstärke IO beträgt. Welchen elektrischen Widerstand kann man daraus für das Gerät berechnen?
Solution:
Geg textbei uns rightarrow U U hat i IO I GesElektrischer WiderstandRsiohm Die Spitzenspannung auf unseren Steckdosen beträgt hat u sqrt U sqrt U u womit also der Widerstand des Gerätes etwa R frachat uhat i fracsqrt Uhat i fracuI R approx RS RP R fracsqrt Uhat i RS RP
Ein Gerät wird bei uns an die Steckdose angeschlossen und ein Messgerät zeigt anschliess dass die Spitzenstromstärke IO beträgt. Welchen elektrischen Widerstand kann man daraus für das Gerät berechnen?
Solution:
Geg textbei uns rightarrow U U hat i IO I GesElektrischer WiderstandRsiohm Die Spitzenspannung auf unseren Steckdosen beträgt hat u sqrt U sqrt U u womit also der Widerstand des Gerätes etwa R frachat uhat i fracsqrt Uhat i fracuI R approx RS RP R fracsqrt Uhat i RS RP
Meta Information
Exercise:
Ein Gerät wird bei uns an die Steckdose angeschlossen und ein Messgerät zeigt anschliess dass die Spitzenstromstärke IO beträgt. Welchen elektrischen Widerstand kann man daraus für das Gerät berechnen?
Solution:
Geg textbei uns rightarrow U U hat i IO I GesElektrischer WiderstandRsiohm Die Spitzenspannung auf unseren Steckdosen beträgt hat u sqrt U sqrt U u womit also der Widerstand des Gerätes etwa R frachat uhat i fracsqrt Uhat i fracuI R approx RS RP R fracsqrt Uhat i RS RP
Ein Gerät wird bei uns an die Steckdose angeschlossen und ein Messgerät zeigt anschliess dass die Spitzenstromstärke IO beträgt. Welchen elektrischen Widerstand kann man daraus für das Gerät berechnen?
Solution:
Geg textbei uns rightarrow U U hat i IO I GesElektrischer WiderstandRsiohm Die Spitzenspannung auf unseren Steckdosen beträgt hat u sqrt U sqrt U u womit also der Widerstand des Gerätes etwa R frachat uhat i fracsqrt Uhat i fracuI R approx RS RP R fracsqrt Uhat i RS RP
Contained in these collections
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Effektivwert und Ohm'sches Gesetz by TeXercises
| Title | Matched on |
|---|---|
| Device connected to outlet | tagsformula |
| Widerstand von Gerät an Steckdose | formula |
| Fläche von Rotor | tags |
| Windungszahl von Rotor | tags |
| Generator in magnetic field | tags |
Physical Quantity
elektrischer Widerstand \(R\)
a.k.a. Widerstand
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Verhältnis von Spannung zu Stromstärke
Unit
Ohm (\(\rm \Omega\))
One of the 22 official SI units.
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