Advertisements
Advertisements
प्रश्न
Two electric lamps each rating 100 W, 110 V are connected in series to a 220 V power supply and two other electric lamps each of marking 100 W, 220 V are connected in parallel to the same power supply. Will anyone of the two combinations give more light than the other? Give a reason for your answer.
Advertisements
उत्तर
Both combinations will give the same light.
Reason: Each combination has the same power namely 200 W.
APPEARS IN
संबंधित प्रश्न
Define kilowatt-hour.
Name two gases which are filled in filament type electric light bulbs.
Distinguish between kilowatt and kilowatt-hour.
1Kwh =`( 1 "volt "xx 1 am pere xx.............)/1000`
1kWh = …….. J
List the names of three electrical gadgets used in your house. Write their power, voltage ratingand approximate time for which each one is used in a day. Hence find the electrical energyconsumed by each in a day.
Why does not the heating coil produce any visible light? in an electric stove.
Find the energy released by a current of 0.25 amperes flowing through a heater for 5 minutes. The p.d. is 230 V.
