Mmastodon SciencePhysics first seen 5 d ago, last 3 d ago, peak #1
Physicists and teachers weigh in on why Ohm's law holds
Original: In # physics class, we learned that voltage equals current times resistance. Using this equation was easy, but I never f
Ohm's law — voltage equals current times resistance — is back in conversation after one commenter admitted that, despite years of using the formula in physics class, they never understood why the relationship holds, or whether it is merely an artifact of how units are defined. Others are discussing the underlying physics of electrical conduction and how the equation is taught in schools.
Why now: People enjoy explaining the deeper reasoning behind a familiar school formula that many accepted without question.
Rank over time, top of the chart is #1. 20 snapshots from 5 d ago to 3 d ago.
Evidence
- In # physics class, we learned that voltage equals current times resistance. Using this equation was easy, but I never found out *why* this relationship pertains. Is it just a feature of how the units of measurement are defined? I still have no idea. · mrundkvist@archaeo.social · 7
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