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Joule law of heating is ....

Joule law of heating is ___________.

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The heat produced in any resistor is :
(i) Directly proportional to the square of the current passing through the resistor.
(ii) Directly proportional to the resistance of the resistor.
(iii) Directly proportional to the time for which the current is passing through the resistor.
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SURA PUBLICATION-ELECTRICITY-TEXTBOOK EVALUATION (
  1. One unit of electrical energy consumed is equal to 1000 kilowatt hour.

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

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

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

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

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

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

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

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  9. State Ohm's law .

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

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

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  12. What is meant by electric current ?

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  13. Define the unit of current.

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  14. The device used to measure electric current is .

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  15. Joule law of heating is .

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  16. An alloy of nickel and chromium is used as the heating element . Why ?

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  17. How does a fuse wire protect electrical appliances ?

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  18. Explain about domestic electric circuits. (circuit diagram not require...

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  19. What are the advantages of LED TV over the normal TV ?

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  20. List the marits of LED bulbs.

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