2.4.74 - Potential along a current-carrying wire

Understand how the potential along a uniform current-carrying wire varies with the distance along it.

Use - potential along a current-carrying wire to connect the rule to the data and decision in the question.

This matters because - potential along a current-carrying wire determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply - potential along a current-carrying wire to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: - Potential along a current-carrying wire is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.