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Results tagged with electromagnetism
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user 269078
The classical theory of electric and magnetic fields, both in the static and dynamic case. It also covers general questions about magnets, electric attraction/repulsion, etc. Distinct from electrical-engineering.
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What do $\ell$ and $A$ precisely mean in the formula for electrical resistance?
In the formula the area(A) is perpendicular to the flow current,
The length (l) is along the flow of current.
Consider an example that will clear you doubt.
Consider a hollow cylinder with inner radi …
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