Driving question : How can you explain the intriguing behaviour of bulbs?

In this activity students use the current and voltage sensors and investigate power delivered to a resistor by investigating the behavior of bulbs in a dc circuit.

Topic: Electric circuits,
Concepts: I(V) Characteristic, Ohm's Law, Resistance,
Grade level: Middle School (11-14 years),
Activity type: Data logging,
Sensors: Current sensor, Voltage sensor (differential),
Interface requirements: Two analog sensor inputs,

The Student Worksheet gives investigation instructions for students.

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The Teacher Notes includes teacher commentaries such as didactical approach, exemplary questions, assignments and data analysis.

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The Science Background describes the scientific principles that underlie the activity.

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Coach Activity/Result file can be opened in the Coach 7 Program. This requires Coach 7 to be installed on your computer.

Download activity Intriguing behaviour of bulbs (.cma7)