Odpowiedzi

2010-04-11T18:15:06+02:00
R=10Ω
t=1s
W=250J
I=?
U=?
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W=U*I*t
U=I*R
W=I²*R*t
I²=W/R*t
I=√[W/(R*t)]=√[250/(10*1)=√25=5 [√[V*A*s/(V*s/A)=A]
U=I*R=5A*10Ω=50V