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P = 100 W
U = 230 V
P = U*I
I = P/U
I = 100 W/230V
I = około 0,4 A
Odp: Natężenie prądu wynosi około 0,4 A.
U=230V
I=?
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P=U*I
I=P/U=100W/230V=0,43A