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An electric bulb is rated 220 volt - 100...

An electric bulb is rated 220 volt - 100 watt. The power consumed by it when operated on 110 volt will be

A

75 W

B

40 W

C

25 W

D

50 W

Text Solution

Verified by Experts

The correct Answer is:
C
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MOTION-CURRENT ELECTRICITY-EXERCISE -4 (Level -I)
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  2. The resistance of hot tungsten filament is about 10 times the cold res...

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  3. An electric bulb is rated 220 volt - 100 watt. The power consumed by i...

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  4. The resistance of a bulb filmanet is 100Omega at a temperature of 100^...

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  5. In a Wheatstone's bridge, three resistances P,Q and R connected in the...

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  6. The Kirchhoff's first law (Sigmai = 0) and second law (SigmaiR = Sigma...

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  7. The current I drawn from the 5V source will be

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  8. The resistance of a wire is 5 Omega at 50^@C and 6 Omega at 100^@C . T...

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  9. A material 'B' has twice the specific resistance of 'A'. A circular wi...

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  10. Shown in the figure below is a meter- bridge set up will null deflecti...

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  11. A 5 V battery with internal resistance 2Omega and a 2V battery with i...

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  12. Statement I : The temperature dependence of resistance is usally given...

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  13. Two conductors have the same resistance at 0^@C but their temperature ...

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  14. In the circuit shown below, the key K is closed at t =0. The current t...

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  15. If 400 Omega of resistance is made by adding four 100 Omega resistance...

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  16. The current in the primary circuit of a potentiometer is 0.2 A. The sp...

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  17. If a copper wire is stretched to make it 0.1% longer wha is the percen...

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  18. Two electic bulbs marked 25 W -220 V and 100 W - 220 V are connected i...

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  19. Resistance of a given wire is obtained by mea suring the current flowi...

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  20. The supply voltage to room is 120 V. The resistance of the lead wires ...

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