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V = 9v
W = 480 joule
i = 2A
Dit: t ?
Jawab :
W = V × i × t
480 = 9 ×2× t
480 = 18 t
t = 480÷18
t= 26,6 s
V= 9 volt
I= 2 ampere
W= 480 joule
Dit:
t=....?
Penye:
W= V.I.t
V.I.t= W
9×2.t= 480
18.t= 480
t= 480/18
t= 26.66 sekon
Uji:
W= V.I.t
W= 9×2×26,66
W= 479,88 jika dibulatkan 480 (sama saja)