Principle
Ohm's law states that the strength of the electric current I flowing through an object is proportional to the electric voltage U. The proportionality factor here is the so-called electric resistance R. The proportionality factor here is the so-called electrical resistance R.
Benefits
- Particularly comprehensible and didactically prepared description of the experiment (reference to everyday life, etc.) incl. protocol questions.
- Future-oriented teaching: Integration into digital science lessons with tablets or smartphones.
- Increased motivation among students through use of the intuitive measureAPP.
- Increased media literacy.
- No additional cable connections between the modules necessary - clearer and faster set-up.
- contact safety due to puzzle-like interlocking building blocks.
- Hard gold-plated, corrosion-resistant contacts
- Double learning success: electrical circuit diagram visible on the upper side and real components on the lower side
Tasks
What is the relationship between voltage and current?
Determine a series of pairs of measured values for voltage and current in a circuit and use them to investigate the relationship between U and I.
Learning Objectives
Students should first identify Ohm's law I ∼ U based on the measured values they have determined.
Then they should also find the condition R = constant for the validity of this law.