P=U*I
I=P/U
I=400W/230V
I=1,74A
I=U/R
R=U/I
R=230V/1,74A
R=132,9Ω
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P=U*I
I=P/U
I=400W/230V
I=1,74A
I=U/R
R=U/I
R=230V/1,74A
R=132,9Ω