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Update textbook.en.md

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Claude Meny 6 years ago
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      10.brainstorming-innovative-courses/intercambio-curso-electromagnetismo/textbook.en.md

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10.brainstorming-innovative-courses/intercambio-curso-electromagnetismo/textbook.en.md

@ -316,10 +316,16 @@ S.I. : $`A \cdot m`$
#### Ley de Biot y Savart: ley física que conecta el campo magnético con sus causas / Loi de Biot & Savart : loi physique reliant le champ magnétique à ses causes / Biot-Savart's law : physical law connecting the magnetic field to its causes
**N1**
**N2**
**N3-N4**
EN : $`\vec{dH_M}=\dfrac{1}{4\pi}\cdot\dfrac{I\cdot\vec{dl}_P\times\vec{PM}}{||\vec{PM}||^3}`$
$`\vec{dH_M}`$ : magnetic field vector (S.I. unit : $`A\cdot m^{-1}`$ or $`A/m`$)
$`\vec{dB_M}`$ : flux density or magnetic field induction vector (S.I. unit : $`T`$)
$`\vec{dH}=\dfrac{1}{4\pi}\cdot\dfrac{I\cdot\vec{dl}\times\vec{r}}{r^3}=\dfrac{1}{4\pi}\cdot\dfrac{I\cdot\vec{dl}\times\vec{e_r}}{r^2}`$

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