Posted by Anonymous on Monday, February 25, 2013 at 5:13pm.
R=R₁+R₂+R₃=1.17+2.84+3.65 =7.66 Ω
I=U/R = 20.3/7.66=2.65 A
P₁ =I²R₁=2.65²•1.17=
P₂ =I²R₂=2.65²•2.84=
P₃=I²R₃=2.65²•3.65=
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