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प्रश्न
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उत्तर
Electrical energy is defined as the total amount of work done to maintain current in a circuit in a given time. Its SI unit is joule.
The rate at which electrical energy is consumed per unit time is called electrical power. It is denoted by P. i.e., Its SI unit is watt.
Electrical power = `"Electrical energy"/"time"`
The other name of kWh is Board of Trade Unit (BOTU).
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संबंधित प्रश्न
Define watt-hour. How many joules are equal to 1 watt-hour?
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Calculate the cost of operating a heater of 500 W for 20 hours at the rate of Rs 3.90 per unit.
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Three 250 W heaters are connected in parallel to a 100 V supply, Calculate the energy supply in kWh to the three heaters in 5 hour.
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What is the commercial unit of electrical energy?
