Current and resistance in a parallel circuit with Cobra SMARTsense

Principle

In the household, electrical devices are often connected in parallel at different sockets to the same circuit. The total current and the total resistance of the circuit can be predicted from the partial resistances.

Benefits

• Particularly comprehensible and didactically prepared description of experiments (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 reliability 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

Investigate the relationship between the total current and the partial currents as well as between the total resistance and the partial resistances in a parallel circuit.

Learning Objectives

The students should learn the relationship between the partial currents of a parallel circuit and the total current based on the measured values they obtain. In addition, they should determine the relationship between partial resistances and total resistance in a parallel circuit.