1,
P=100W
U=200V
R=?
P=U*I
I=P/U=100W/200V=0,5A
R=U/I=200V/0,5A=400Ω
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1,
P=100W
U=200V
R=?
P=U*I
I=P/U=100W/200V=0,5A
R=U/I=200V/0,5A=400Ω