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R = 5 kilo ohm = 5 × 1000 = 5.000 ohm
I = 2 A
t = 2 jam = 3600 × 2 = 7200 sekon
Ditanyakan
W = ... ?
Penyelesaian
W = I^2 . R . t
W = 2^2 . 5.000 . 7200
W = 4 . 5.000. 7200
W = 144. 000. 000 joule
1kwh = 3.600.000 maka
Joule ke Kwh = 144.000.000 / 3.600.000
Kwh = 40
W = 40 Kwh
Semoga membantu ^^