Physics A-Level
Ohm's Law
What Ohm's Law means in Physics A-Level, as defined for Pearson Edexcel.
Definition of Ohm's Law
The current through a conductor is directly proportional to the potential difference across it, provided the temperature remains constant.
Topics that use Ohm's Law
- Materials (Pearson Edexcel A-Level)
Related terms
Using Ohm's Law in the exam
Definition questions usually carry one or two marks, and examiners look for the precise wording. Write the definition from memory, check it against the version above, and then use the term in a longer answer on the same topic so it sticks.
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