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The power of an electric device is a pro...

The power of an electric device is a product of __________ and ___________.

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voltage, current
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SURA PUBLICATION-ELECTRICITY-TEXTBOOK EVALUATION (
  1. The ratio of the potential difference to the current is known as .

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  2. The wiring in a house consists of circuit.

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  3. The power of an electric device is a product of and .

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  4. LED stands for.

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  5. MCB is used to protect house hold electrical appliances.

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  6. Define th SI unit of electric current. (or) What is one second in SI s...

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  7. One unit of electrical energy consumed is equal to 1000 kilowatt hour.

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  8. The effective resistance of three resistors connected in series is les...

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  9. Assertion: In a simple battery circuit the point of highest potential ...

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  10. Assertion: LED bulbs are far better than incandescent bulbs. Reason:...

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  11. What happens to the resistance, as the conductor is made thicker ?

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  12. Why is tungsten metal used in bulbs, but not in fuse wires ?

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  13. Name any two devices, which are working on the heating effect of the e...

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  14. What is the role of the earth wire in domestic circuits ?

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  15. State Ohm's law .

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  16. Distinguish between the resistivity and conductivity of a conductor .

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  17. What connection is used in domestic appliances and why ?

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  18. What is meant by electric current ?

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  19. Define the unit of current.

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  20. The device used to measure electric current is .

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