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I = 0,5 A
R = 100 ohm
t = 2 menit = 120s
Ditanyakan = W
Dijawab =
W = x R x t
W = x 100 ohm x 120s
W = 3000 J
Dit:Wkalor?
Jawab:Wkalor=I kuadrat *R*T
=0,5.0,5.100.120
=3000
Wkalor=3000 kalori
dalam kkal=3 kkal