Priscilla Anak Nari calculated the monthly electricity costs for 10 common electric appliances used in her home. She determined the power rating, estimated usage time, and energy consumption in kWh for each appliance. The total electricity consumption for all 10 appliances was 146.44 kWh, costing RM 31.92 for the month.

1. SFE1013:
10 Electric Appliances
NAME: PRISCILLA ANAK NARI
MATRIX NUM: E20111002676
CLASS GROUP: E
LECTURER’S NAME: EN MOHD IKHWAN HADI BIN YAACOB

2. Electronic Appliances Rough calculation for cost of one month
Power: 76W
1. Sony E Series Laptop AC Adapter
Voltage: 19.5V
Energy = Power × Time
= 76W × (30 days × 4 h) ×
= 9.12 kWh
Cost = 9.12 kWh × RM 0.218
= RM 1.989
Power: 1850W
2. Midea Electric Jug Kettle (MK-17P10A)
Voltage: 220V
Energy = Power × Time
= 1850W × (30 days × h) ×
= 27.75 kWh
Cost = 27.75 kWh × RM 0.218
= RM 6.049
Power: 1000W
3. Panasonic Compact Hair Dryer (EH-ND11)
Voltage: 220V
Energy = Power × Time
= 1000W × (10 days × h) ×
= 5 kWh
Cost = 5 kWh × RM 0.218
= RM 1.09
Power: 1700W
4. Singer Classic Finish Iron
Voltage: 120V
Energy = Power × Time
= 1700W × (20 days × h) ×
= 17 kWh
Cost = 17 kWh × RM 0.218
= RM 3.706

3. Power: 400W
5. V-tex Automatic Rice Cooker (V18B-1.0)
Voltage: 240V
Energy = Power × Time
= 400W × (26 days × h) ×
= 3.467 kWh
Cost = 3.467 kWh × RM 0.218
= RM 0.756
Power: 11W
6. Printer PIXMA iP2770
Voltage: 240V
Energy = Power × Time
= 11W × (30days × 1h) ×
= 0.33 kWh
Cost = 0.33 kWh × RM 0.218
= RM 0.072
Power: 1500W
7. TRIO Multi Cooker TMC-356
Voltage: 240V
Energy = Power × Time
= 1500W × (30days × 1h) ×
= 45 kWh
Cost = 45 kWh × RM 0.218
= RM 9.81
Power: 6W
8. Kids LED reading lamp (JK801BK-3W)
Voltage: 240V
Energy = Power × Time
= 6W × (26days × 5h) ×
= 0.78 kWh
Cost = 0.78 kWh × RM 0.218
= RM 0.17

4. Power: 10W
9. Nokia E5-00 Series AC Charger
Voltage: 240V
Energy = Power × Time
= 10W × (19days × 4h) ×
= 0.76 kWh
Cost = 0.76 kWh × RM 0.218
= RM 0.166
Power: 73W
10. msi Ceiling Fan MF series (MF60)
Voltage: 240V
Energy = Power × Time
= 73W × (30days × 17h) ×
= 37.23 kWh
Cost = 37.23 kWh × RM 0.218
= RM 8.116
Electric Appliances Power Rating Cost
1. Sony E Series Laptop AC Adapter 9.12 kWh RM 1.989
2. Midea Electric Jug Kettle (MK-17P10A) 27.75 kWh RM 6.049
3. Panasonic Compact Hair Dryer (EH-ND11) 5 kWh RM 1.090
4. Singer Classic Finish Iron 17 kWh RM 3.706
5. V-tex Automatic Rice Cooker (V18B-1.0) 3.467 kWh RM 0.756
6. Printer PIXMA iP2770 0.33 kWh RM 0.072
7. TRIO Multi Cooker TMC-356 45 kWh RM 9.810
8. Kids LED reading lamp (JK801BK-3W) 0.78 kWh RM 0.170
9. Nokia E5-00 Series AC Charger 0.76 kWh RM 0.166
10. msi Ceiling Fan MF series (MF60) 37.23 kWh RM 8.116
Total 146.44kWh RM 31.92
 Total cost for 1 month = RM 31.92