Horizontales Kabel
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 \(I\) / Magnetische Flussdichte \(B\) / Winkel \(\theta\) /
The following formulas must be used to solve the exercise:
\(\cos\alpha = \dfrac{b}{c} \quad \) \(B = \dfrac{\mu_0 I}{2\pi r} \quad \) \(a^2+b^2=c^2 \quad \)
No explanation / solution video to this exercise has yet been created.
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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 sehr langes Kabel führt einen Strom der Stärke pqA Richtung Norden. abcliste abc Wie stark ist das vom Kabel erzeugte Magnetfeld pqcm westlich des Kabels? abc Wie stark ist das aus Kabel und Erde resultiere Magnetfeld wenn jenes der Erde eine Stärke von pqupmu T hat und unter einem Winkel von grad gegenüber der Horizontalen auf die Erde zeigt? abcliste
Solution:
abcliste abc Das vom Kabel erzeugte Magnetfeld im angegebenen Abstand ist Bfracmu_ Ipi r pqT. abc Das Magnetfeld der Erde hat eine Vertikalkomponente von tilde B_v B_EarthIndex sin-grad pq-.T. Insgesamt ergibt sich somit eine resultiere Vertikalkomponente von B_vB + tilde B_v pq.T. Die Horizontalkomponente hat ihren Ursprung alleine im Erdfeld sie ist also B_h B_EarthIndex cosgrad pq.T Das total resultiere Feld ist also B_mathrmres sqrtB_h^+B_v^ pq.T. abcliste
Ein sehr langes Kabel führt einen Strom der Stärke pqA Richtung Norden. abcliste abc Wie stark ist das vom Kabel erzeugte Magnetfeld pqcm westlich des Kabels? abc Wie stark ist das aus Kabel und Erde resultiere Magnetfeld wenn jenes der Erde eine Stärke von pqupmu T hat und unter einem Winkel von grad gegenüber der Horizontalen auf die Erde zeigt? abcliste
Solution:
abcliste abc Das vom Kabel erzeugte Magnetfeld im angegebenen Abstand ist Bfracmu_ Ipi r pqT. abc Das Magnetfeld der Erde hat eine Vertikalkomponente von tilde B_v B_EarthIndex sin-grad pq-.T. Insgesamt ergibt sich somit eine resultiere Vertikalkomponente von B_vB + tilde B_v pq.T. Die Horizontalkomponente hat ihren Ursprung alleine im Erdfeld sie ist also B_h B_EarthIndex cosgrad pq.T Das total resultiere Feld ist also B_mathrmres sqrtB_h^+B_v^ pq.T. abcliste
Meta Information
Exercise:
Ein sehr langes Kabel führt einen Strom der Stärke pqA Richtung Norden. abcliste abc Wie stark ist das vom Kabel erzeugte Magnetfeld pqcm westlich des Kabels? abc Wie stark ist das aus Kabel und Erde resultiere Magnetfeld wenn jenes der Erde eine Stärke von pqupmu T hat und unter einem Winkel von grad gegenüber der Horizontalen auf die Erde zeigt? abcliste
Solution:
abcliste abc Das vom Kabel erzeugte Magnetfeld im angegebenen Abstand ist Bfracmu_ Ipi r pqT. abc Das Magnetfeld der Erde hat eine Vertikalkomponente von tilde B_v B_EarthIndex sin-grad pq-.T. Insgesamt ergibt sich somit eine resultiere Vertikalkomponente von B_vB + tilde B_v pq.T. Die Horizontalkomponente hat ihren Ursprung alleine im Erdfeld sie ist also B_h B_EarthIndex cosgrad pq.T Das total resultiere Feld ist also B_mathrmres sqrtB_h^+B_v^ pq.T. abcliste
Ein sehr langes Kabel führt einen Strom der Stärke pqA Richtung Norden. abcliste abc Wie stark ist das vom Kabel erzeugte Magnetfeld pqcm westlich des Kabels? abc Wie stark ist das aus Kabel und Erde resultiere Magnetfeld wenn jenes der Erde eine Stärke von pqupmu T hat und unter einem Winkel von grad gegenüber der Horizontalen auf die Erde zeigt? abcliste
Solution:
abcliste abc Das vom Kabel erzeugte Magnetfeld im angegebenen Abstand ist Bfracmu_ Ipi r pqT. abc Das Magnetfeld der Erde hat eine Vertikalkomponente von tilde B_v B_EarthIndex sin-grad pq-.T. Insgesamt ergibt sich somit eine resultiere Vertikalkomponente von B_vB + tilde B_v pq.T. Die Horizontalkomponente hat ihren Ursprung alleine im Erdfeld sie ist also B_h B_EarthIndex cosgrad pq.T Das total resultiere Feld ist also B_mathrmres sqrtB_h^+B_v^ pq.T. abcliste
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