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प्रश्न
Define the term kilowatt - hour and state its value in S.I. unit.
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उत्तर
One kilowatt-hour (kWh) is the electrical energy consumed by an electrical appliance of power 1 kW when it is used for one hour.
Its value in SI unit is 1 kWh = 3.6 × 106 J
संबंधित प्रश्न
How many milliamperes as there in 1 ampere?
In the circuit diagram given below, three resistors R1, R2, and R3 of 5 Ω, 10 Ω and 30 Ω, respectively are connected as shown
Calculate:
- current through each resistor.
- total current in the circuit.
- total resistance in the circuit.
A 720 W heater operates from a 220 V line voltage. Calculate:
(a) The electrical energy consumed by the heater in 3 h.
(b) The cost of electrical energy consumption at the rate of 60 paise per kWh.
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(a) What do the symbols Q and V represent?
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