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Lösning 4.4:10

Version från den 26 januari 2010 kl. 10.38; Lena Chytraeus (Diskussion | bidrag)

U=230V P=500W R=171

P=UIcos cos=URUZ=RIZI=RZ

=314rads

U=IZ P=UIRZ=U2RZ2

500=2302171Z2

Z=425 cos=171425=040

Z=R2+2L2 425=1712+3142L2

L=0123H