Từ trường của dòng điện đặc biệt

 $B=2.10^{-7}\frac{I}{r}$ 

 $B=2\pi.10^{-7}\ N.\frac{I}{R}$ 

 $B=4\pi.10^{-7}\ \frac{N}{\ l}.I$ 

 $B=2.10^{-7}\frac{I}{r}$ 

 $B=2\pi.10^{-7}\ N.\frac{I}{R}$ 

 $B=4\pi.10^{-7}\ \frac{N}{\ l}.I$ 

 $B=2.10^{-7}\frac{I}{r}$ 

 $B=2\pi.10^{-7}N.\frac{I}{R}$ 

 $B=4\pi.10^{-7}\ \frac{N}{\ l}.I$ 

$2.10^{-6}\ T$

$2\pi.10^{-6}\ T$

$2.10^{-5}\ T$

$2\pi.10^{-5}\ T$

$2\pi.10^{-5}\ T$

$4\pi.10^{-5}\ T$

$2.10^{-7}\ T$

$4.10^{-7}\ T$

$1,5\pi.10^{-7}\ T$

$6\pi.10^{-7}\ T$

$15\pi\cdot10^{-5}\ T$

$6\pi\cdot10^{-5\ }T$