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Lösning 4.4:10

FörberedandeFysik

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U=230V P=500W R=171 P=UIcos
cos=URUZ=RIZI=RZ !=314rad=sU=IÁZP=UIÁR=Z=U2R=Z2500=2302Á17;1=Z2 Z=42;5Êcos¶=17;1=42;5=0;40Z=pR2+!2L242;5=p17;12+3142L2 L=0;123H