This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.
ScanSolve AI Answer
Here's how to calculate the cost of running the refrigerator: Step 1: Calculate the energy consumed by the refrigerator per day. The power of the refrigerator is 200 W, and it runs for 10 hours each day. E_day = Power × Time per day E_day = 200 W × 10 h = 2000 Wh Step 2: Convert the daily energy consumption from Watt-hours (Wh) to kilowatt-hours (kWh). Since 1 kWh = 1000 Wh: E_day, kWh = 2000 Wh1000 Wh/kWh = 2 kWh Step 3: Calculate the total energy consumed over 20 days. The refrigerator runs for 20 days. E_total = E_day, kWh × Number of days E_total = 2 kWh/day × 20 days = 40 kWh Step 4: Calculate the total cost of running the refrigerator. One unit of electricity (1 kWh) costs ₦2. Total Cost = E_total × Cost per kWh Total Cost = 40 kWh × ₦2/kWh = ₦80 The total cost of running the refrigerator for 20 days is ₦80. That's 2 down. 3 left today — send the next one.