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How does a fuse wire protect electrical ...

How does a fuse wire protect electrical appliances ?

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(i) The fuse wire is connected is series, in an electric circuit.
(ii) When a large current passe through the circuit, the fuse wire melts due to Joule's law of heating and hence the circuit gets disconnected.
(iv) Therefore, the current and the electric appliances are saved from any damage.
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SURA PUBLICATION-ELECTRICITY-TEXTBOOK EVALUATION (
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  2. The effective resistance of three resistors connected in series is les...

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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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