Advertisements
Advertisements
प्रश्न
An electric bulb is marked 100 W, 230 V. What does this mean?
Advertisements
उत्तर
This statement means that the bulb is operated at 230 volt and consumes 100 watt of power.
संबंधित प्रश्न
An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, the power consumed will be ______.
An electric bulb is connected to a 220 V power supply line. If the bulb draws a current of 0.5 A, calculate the power of the bulb.
The commercial unit of energy is :
(a) watt
(b) watt-hour
(c) kilowatt-hour
(d) kilo-joule
What is the resistance, under normal working conditions of a 240 V electric lamp rated at 60 W? If two such lamps are connected in series across a 240 V mains supply, explain why each one appears less bright.
Fig . shows the essent ial features of a battery operated bell. The hammer strikes the gong when the swi tch is closed . State and explain the effect of using the following material successively to form the core.

(a) Plastic
(b) Steel
(c) Copper
Household wiring for lamp connections can either be done in parallel or in series.Which one would you prefer? Give a reason for your answer.
Why does not the heating coil produce any visible light? in an electric stove.
State relative advantages and disadvantages of ring system of wiring over the tree system.
