Thin Film Resistor
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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 tablecolumn... 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 "inbetween" solution, i.e. no algebraic equation needed. Example exercise
Level 3  "Chaincomputations" 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 "inbetween" 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 tablecolumn... 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 "inbetween" solution, i.e. no algebraic equation needed. Example exercise
Level 3  "Chaincomputations" 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 "inbetween" results. Example exercise
Level 5 
Level 6 
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Exercise:
For a thin film resistor a cylindrical ceramic or glass carrier is covered with a thin conducting layer. The thickness of the layer is typically between .microm and microm. Carbon metals or metal oxides are typical conductors used for this type of resistors. abcliste abc How thick is the layer for a carbon graphite film resistor with a length of LO a diameter of dO and a resistance of RO? abc How can the same resistor be realised with a thicker layer? abcliste
Solution:
abcliste abc Since the carbon layer is very thin we can approximate it as a thin cuboid with length L width pi d and thickness h. It follows for the resistance that R sscrhoelfracLA sscrhoelfracLpi d h Solving for the thickness h leads to h hF fracretimesLpitimesdtimesR h approx resulthP abc A common approach is to cut a groove o the layer that spirals along the resistor thereby increasing the length and reducing the width of the layer. This allows for a thicker layer while keeping the resistance constant. abcliste
For a thin film resistor a cylindrical ceramic or glass carrier is covered with a thin conducting layer. The thickness of the layer is typically between .microm and microm. Carbon metals or metal oxides are typical conductors used for this type of resistors. abcliste abc How thick is the layer for a carbon graphite film resistor with a length of LO a diameter of dO and a resistance of RO? abc How can the same resistor be realised with a thicker layer? abcliste
Solution:
abcliste abc Since the carbon layer is very thin we can approximate it as a thin cuboid with length L width pi d and thickness h. It follows for the resistance that R sscrhoelfracLA sscrhoelfracLpi d h Solving for the thickness h leads to h hF fracretimesLpitimesdtimesR h approx resulthP abc A common approach is to cut a groove o the layer that spirals along the resistor thereby increasing the length and reducing the width of the layer. This allows for a thicker layer while keeping the resistance constant. abcliste
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Exercise:
For a thin film resistor a cylindrical ceramic or glass carrier is covered with a thin conducting layer. The thickness of the layer is typically between .microm and microm. Carbon metals or metal oxides are typical conductors used for this type of resistors. abcliste abc How thick is the layer for a carbon graphite film resistor with a length of LO a diameter of dO and a resistance of RO? abc How can the same resistor be realised with a thicker layer? abcliste
Solution:
abcliste abc Since the carbon layer is very thin we can approximate it as a thin cuboid with length L width pi d and thickness h. It follows for the resistance that R sscrhoelfracLA sscrhoelfracLpi d h Solving for the thickness h leads to h hF fracretimesLpitimesdtimesR h approx resulthP abc A common approach is to cut a groove o the layer that spirals along the resistor thereby increasing the length and reducing the width of the layer. This allows for a thicker layer while keeping the resistance constant. abcliste
For a thin film resistor a cylindrical ceramic or glass carrier is covered with a thin conducting layer. The thickness of the layer is typically between .microm and microm. Carbon metals or metal oxides are typical conductors used for this type of resistors. abcliste abc How thick is the layer for a carbon graphite film resistor with a length of LO a diameter of dO and a resistance of RO? abc How can the same resistor be realised with a thicker layer? abcliste
Solution:
abcliste abc Since the carbon layer is very thin we can approximate it as a thin cuboid with length L width pi d and thickness h. It follows for the resistance that R sscrhoelfracLA sscrhoelfracLpi d h Solving for the thickness h leads to h hF fracretimesLpitimesdtimesR h approx resulthP abc A common approach is to cut a groove o the layer that spirals along the resistor thereby increasing the length and reducing the width of the layer. This allows for a thicker layer while keeping the resistance constant. abcliste
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