By changing the resistance with a rheostat, students plot a graph of Voltage vs. Current. The Y-intercept represents the EMF ( ) , and the slope represents the Internal Resistance ( ) . Resources for Verification

Clearly state what you are measuring (e.g., "Determining the Elasticity Modulus of Rubber").

This is one of the most common high-stakes labs in the Tikhomirov program. (Ohm’s Law for a complete circuit).

): Usually expressed as a percentage to show the accuracy of the experiment.

Measuring the electromotive force (EMF) and internal resistance of a current source. Typical Work Structure & Requirements

A summary of whether the results align with theoretical laws (e.g., "The measured acceleration of is consistent with the free-fall acceleration within a 2% error margin"). Key Example: Measuring EMF and Internal Resistance