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संबंधित प्रश्न
An electric motor takes 5 A from a 220 V line. Determine the power of the motor and the energy consumed in 2 h.
Which of the following is likely to be the correct wattage for an electric iron used in our homes?
(a) 60 W
(b) 250 W
(c) 850 W
(d) 2000 W
A bulb of 40 W is used for 12.5 h each day for 30 days. Calculate the electrical energy consumed.
What is the energy conversion when an electric current passes through a metallic wire?
State three factors on which the heat produced in a metallic wire due to passage of current in it depends.
An electric bulb is rated as 100W – 250V. What information does it convey? Calculate the resistance of its filament while glowing.
An Electric bulb is marked 100 W, 230 V. What find the energy consumed by the bulb in one hour.
A electric bulb is rate 220 V, 60 W. its electric cell resistance is nearly
A room has AC run for 5 hours a day at a voltage of 220V. The wiring of the room consists of Cu of 1 mm radius and a length of 10 m. Power consumption per day is 10 commercial units. What fraction of it goes in the joule heating in wires? What would happen if the wiring is made of aluminium of the same dimensions?
`[ρ_(Cu) = 1.7 xx 10_(Ωm)^-8, ρ_(Al) = 2.7 xx 10^-8 Ωm]`
1 kWh = ______ J.
