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Verified answer
Diket :P1 = 110 w
V1= 220 v
V2 = 110 v
dit : Daya terpakai
jwb :
P2 = ( V2 / V1 ) ^2 . P1
P2 = ( 110 / 220 )^2 . 110
P2= 0,25 . 110
P2 = 27,5 watt