Respostas

2014-01-22T19:43:25-02:00
Resposta

B = Uo*i /2*pi*d
B = 4*10^-7pi * 4 / 2pi*0,05
B = 16*10^-7 / 0,1
B = 160*10^-7
B = 1,6*10^-5 T