Principle

Working out the equation
R = ρ l∕A takes
some time. The relationships R ∼ l and
R ∼ 1∕A should first be recognized. We
recommend that each group of students only carry out one of
the experiments, and following this, gain the knowledge that
R ∼ l∕A in a joint
evaluation.

Benefits


No additional cable connections between the building blocks needed - clear arragned and quick setup

Contact saftey due to puzzle blocks system

Corrosion-free gold plated contacts

Doubled earning sucess: Electric circuit diagram on top, real components can be seen unterside



Tasks

How do the length and cross-sectional area of a wire influence
the value of its resistance?

Determine the relationship between the resistance of a wire and
its length and cross-sectional area.