Answer
Power - 694.44 W
Current - 5.787 A
Energy - reduced by 8.64%
Work Step by Step
Total energy consumed = Total bill / Bill per unit energy = 60/0.12 = 500 kWh
Power = Total energy / Total time = $\frac{500 \times 1000 Wh}{30 \times 24h}$ = 694.44 W
If voltage = 120 V, current = power/voltage = 694.44/120 = 5.787 A
If 60 W light is turned off, power would be reduced by 60. Hence reduced percentage = $60 \times 100 / 694.44$ = 8.64%
