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P =200 w
V =220 volt
t = 20 menit x 60 = 1200 sekon
Dit. W............?
penyelesaian :
W = V. i. t
W = P. t
= 200. 1200
= 240000 J
= 240 x 10³ J
= 240 kJ
P = 200 watt
V = 220 V
t = 20 menit = 20 x 60 = 1200 s
Ditanyakan : W ?
Dijawab :
W = P x t
= 200 x 1200
= 240.000 J