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Power Consumption Formula:
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Electric power consumption refers to the amount of electrical energy used by an appliance or device over a period of time. It is typically measured in kilowatt-hours (kWh), which is the standard unit for electricity billing.
The calculator uses the power consumption formula:
Where:
Explanation: This formula calculates the total energy consumed by multiplying the power rating of the device by the time it's used, then converting from watt-hours to kilowatt-hours.
Details: Calculating power consumption helps in understanding energy usage patterns, estimating electricity costs, identifying energy-efficient appliances, and managing household or business energy budgets effectively.
Tips: Enter the power rating of your device in watts and the duration of usage in hours. Both values must be positive numbers. The calculator will provide the consumption in kilowatt-hours (kWh).
Q1: What is the difference between power and energy consumption?
A: Power (watts) is the rate at which energy is used, while energy consumption (kWh) is the total amount of energy used over time.
Q2: How do I find the power rating of my appliance?
A: Check the manufacturer's label on the appliance, usually located on the back, bottom, or in the user manual. It's typically listed in watts (W) or kilowatts (kW).
Q3: Can I use this calculator for multiple appliances?
A: Yes, calculate each appliance separately and sum the results to get total household consumption.
Q4: How accurate is this calculation for cost estimation?
A: Very accurate for estimating energy usage. Multiply the result by your electricity rate (per kWh) to estimate cost.
Q5: What is a typical power consumption for common appliances?
A: LED bulb: 5-15W, Laptop: 50-100W, Refrigerator: 100-400W, Air conditioner: 1000-5000W, depending on size and efficiency.