Ohm's law is described as not being:
AUniversally valid
BUsefully verified
CUniformly voiced
DUnusually varied
Answer & Solution
Correct answer: A. Universally valid
1. Many substances obey it closely.
2. Others do not follow it at all.
3. So the law is not universally valid.
_Source: OpenStax College Physics 2e, Chapter 20, Electric Current, Resistance, and Ohm's Law._
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