minta caranyq boleh.??? thanks

RUMUS ENERGI = V . I. T

Rice cooker = 220 . 2 . 0.5 jam ( 30 menit/)
= 440 . 0,5
= 220 watt

komputer = 220 . 1 . 4
= 880 watt

Lampu = 220 . 0,5 . 6
= 660 watt

energi seluruhnya = 220 + 880 + 660
=1.760 watt

diubah ke kwh ==> 1760/1000 = 1,76 kwh