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Results tagged with electromagnetism
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user 159351
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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Permittivity vs resistance of metals and skin depth
A lecture in my electrodynamics course cleared this up:
When people say $\varepsilon=\infty$ for a conductor, they are trying to get across that, in a static field, the resultant steady state solution …
- 277
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answers
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Permittivity vs resistance of metals and skin depth
I'm asked to estimate the skin depth of copper at a certain frequency, but in deriving the equation for skin depth we basically need to assume $-\omega^2\varepsilon+j\omega\sigma\approx j\omega\sigma$ …
- 277