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संबंधित प्रश्न
In a house two 60 W electric bulbs are lighted for 4 hours, and three 100 W bulbs for 5 hours everyday. Calculate the electric consumed in 30 days.
The unit for expressing electric power is:
(a) volt
(b) joule
(c) coulomb
(d) watt
1Kwh =`( 1 "volt "xx 1 am pere xx.............)/1000`
An electric kettle is rated 2.5 kW, 250 V. Find the cost of running the kettle for two hours at Rs. 5.40 per unit.
Define 1 kilowatt hour.
What is the energy conversion when an electric current passes through a metallic wire?
What is electric power? State and define its S.I. unit.
‘The current rating of a fuse is 5A’. Comment on this statement.
A device is used to transform 12 V a.c. to 200 V a.c. What is the name of this device? Name the principle on which it works.
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.
