In this activity, students will explore the relationship between current and potential difference for several resistors which obey Ohm's Law. They will experimentally measure the resistance of the resistors. Students will then examine the relationship between current and potential difference using a light bulb to observe a non-ohmic material.

Students must be instructed on how to properly use multimeters to measure current and voltage prior to beginning this activity. They will also need some intruction concerning how to connect the circuit.

Students will create their own .tns file in this activity. Step-by-step instructions are included in the document. Questions are included throughout the document to help guide students as they make observations.