Odpowiedź:
r=2cm=0,02m
B=0,3T
μo=4π*10⁻⁷H/m
B=μo*I/2πr
B*2πr=μo*I
I=B*2π*r/μo
I=0,3T*2π*0,02m/4π*10⁻⁷H/m
I=0,003*10⁷=30 000A
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Odpowiedź:
r=2cm=0,02m
B=0,3T
μo=4π*10⁻⁷H/m
B=μo*I/2πr
B*2πr=μo*I
I=B*2π*r/μo
I=0,3T*2π*0,02m/4π*10⁻⁷H/m
I=0,003*10⁷=30 000A