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Verified answer
Diket :P1 = 300 w
V1 =220 v
V2 = 110 v
dit : Daya terpakai
jwb :
P2 = ( V2/V1)^2 . P1
P2 = ( 110/220)^2 . 300
P2 = 0,25 . 300
P2 = 75 watt
jadi daya setrka pd teg. 110 v adalah :
75 watt