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संबंधित प्रश्न
What determines the rate at which energy is delivered by a current?
Which uses more energy, a 250 W TV set in 1 hr, or a 1200 W toaster in 10 minutes?
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.
Name the physical quality which is measured in
(i) Kw (ii) kWh
List the names of three electrical gadgets used in your house. Write their power, voltage rating and approximate time for which each one is used in a day. Hence, find the electrical energy consumed by each in a day.
Name the physical quantity which is measured in kW.
How does the heat produced by die passage of current in a metallic wire depend on the resistance of the wire.
Two bulbs are rated: bulb A 100W, 120 V bulb B 10 W, 120 V. If both are connected across a 120V supply, which bulb will consume more energy, When in parallel? Also calculate the current through each bulb in the above cases.
A electric bulb is rate 220 V, 60 W. its electric cell resistance is nearly
