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An electric bulb marked 40W-200 V is use...

An electric bulb marked 40W-200 V is used in a circuit of supply voltage 100V. Now its power is

A

100 W

B

40 W

C

20 W

D

10 W

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MODERN PUBLICATION-ELECTRICITY-EXERCISE
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  3. An electric bulb marked 40W-200 V is used in a circuit of supply volta...

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  6. A cylindrical conductor of length l and uniform are of cross section A...

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  7. The resistivtiy does not change if

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  8. In an electrical circuit two resistors of 2 ohm and 4 ohm espectively ...

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  9. A number of cells when connected in series from

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  10. In a voltmeter there are 20 divisin between the 0 mark and 0.5 V mark....

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  11. Which of the following statements does not represent ohm's law?

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  12. True or false The resistance of ammeteer is very high.

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  13. True or false In a circuit resistance is doubled the current to half.

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  14. True or false Germanium is a substance whose resistance decreases with...

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  15. True or false A bird perched on a high voltage wire is killed by the c...

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  16. True or false Volt is represented by joule/coulomb.

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  17. Fill ups Among silver and copper……………is a better conductor.

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  18. Resistance of a conductor depends on:

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  19. Fill ups The current through a lamp of 25 W operating at 200 V is……………...

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  20. Fill ups Lead tin alloy is used for making fuse because it has…………..me...

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