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Verified answer
Perubahan Energi Listrik menjadi Energi KalorWlistrik = Q
P.t = m c ∆T
120 . t = rho . V . c ∆T
120 . t = 1000 . 2/1000 . 4200 . 60
2 . t = 2 . 4200
t = 4200 detik = 70 menit