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प्रश्न
1 kWh = ______ J.
उत्तर
1 kWh = 3.6 × 106 J.
संबंधित प्रश्न
1 calorie = _________ joule.
State whether an electric heater will consume more electrical energy or less electrical energy per second when the length of its heating element is reduced. Give reasons for your answer.
An electric bulb of resistance 500 Ω draws current 0.4 A from the source. Calculate:
- the power of bulb and
- the potential difference at its end.
What is the function of the split rings in a d.c. motor?
An electric iron is rated at 230 V, 750 W. What is its resistance? What maximum current can be passed through it?
An Electric bulb is marked 100 W, 230 V. What how long would this lamp take to consume one unit of electricity?
The resistance of filament of an electric heater is 500 Ω It is operated at 200V for 1 hour daily. Calculate the current drawn by the heater and the energy consumed in kWh, by the heater in a month of 30 days.
A 100-watt electric bulb is used for 5 hours daily and four 60 watt bulbs are used for 5 hours daily. Calculate the energy consumed (in kWh) in the month of January.
A cooler of 1500 W, 200 volts and a fan of 500 W, 200 volts are to be used from a household supply. The rating of fuse to be used is:
