PHYWE Electric Power and Cobra SMARTsense Operation

Principle The electrical power required to operate electrical components is determined by the electric current flowing under an applied voltage. In this experiment, the brightness of incandescent light bulbs is used as a measure of electrical power. Students can easily see, for example, that two identical bulbs together have twice the power if they shine with the same brightness. Benefits Extremely clear and didactically prepared description of the experiment (reference to everyday life, etc.), including protocol questions. Future-oriented learning: integration into digital science lessons with tablets or smartphones. Reliable contact thanks to puzzle-like interlocking building blocks with solid, gold-plated, corrosion-resistant contacts Double learning success: the electrical circuit diagram is visible on the top side and the real components on the bottom side Future-oriented learning: integration of sensors (Cobra SMARTsense) into digital science education with the MeasureAPP app Tasks Using parallel and series connection of incandescent light bulbs, investigate the dependence of electrical power on current and voltage. Learning Objectives Students will be able to derive the relationship between power, current, and voltage from an experiment: P ∼ U for I = constant and P ∼ I for U = constant.