Correct option is B
The correct answer is (b) ₹900/-
Explanation:
To calculate the cost of operating the refrigerator, let's follow these steps:
Given:
- Power consumption of the refrigerator = 500 W = 0.5 kW (since 1 kW = 1000 W)
- Operating time per day = 12 hours
- Duration of operation = 30 days
- Cost of electricity = ₹5.00 per kWh
Step 1: Calculate the energy consumption per day
Energy consumed per day = Power × Time
Energy per day=0.5kW×12hours=6kWh\text{Energy per day} = 0.5 \, \text{kW} \times 12 \, \text{hours} = 6 \, \text{kWh}Energy per day=0.5kW×12hours=6kWh
Step 2: Calculate the total energy consumption for 30 days
Total energy for 30 days=6kWh/day×30days=180kWh\text{Total energy for 30 days} = 6 \, \text{kWh/day} \times 30 \, \text{days} = 180 \, \text{kWh}Total energy for 30 days=6kWh/day×30days=180kWh
Step 3: Calculate the total cost
Total cost=Total energy×Cost per kWh\text{Total cost} = \text{Total energy} \times \text{Cost per kWh}Total cost=Total energy×Cost per kWhTotal cost=180kWh×5₹/kWh=900₹\text{Total cost} = 180 \, \text{kWh} \times 5 \, \text{₹/kWh} = 900 \, \text{₹}Total cost=180kWh×₹5/kWh=₹900
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