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Name the material which is used for maki...

Name the material which is used for making the heating element of an electric iron.

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The correct Answer is:
Nichrome
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LAKHMIR SINGH & MANJIT KAUR-ELECTRICITY -Exercise
  1. Which among iron and mercury is a better conductor of electricity?

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  2. Why are copper and aluminium wires usually used for electricity transm...

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  3. Name the material which is used for making the heating element of an e...

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  4. What is nichrome? State its one use.

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  5. Why is nichrome used as a heating element ?

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  6. Why are coils of electric toasters and electric irons made of an alloy...

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  7. Which has more resistance: (a) a long piece of nichrome wire or shor...

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  8. (a) How does the resistance of a pure metal change if its temperature ...

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  9. Fill in the following blanks with suitable words: Resistance is meas...

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  10. (a) What do you understand by the ''resistivity'' of a substance? (b...

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  11. (a) Write down an expression for the resistance of a metallic wire in ...

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  12. (a) Give two examples of substances which are good conductors of elect...

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  13. Will current flow more easily through a thick wire or a thin wire of t...

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  14. How does the resistance of a conductor depend on: (a) length of the ...

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  15. (a) Give one example to show how the resistance depends on the nature ...

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  16. What would be the effect on the resistance of a metal wire of: (a) i...

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  17. How does the resistance of a wire vary with its: (a) area of cross-s...

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  18. How does the resistance of a wire change when: (i) its length is tri...

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  19. Calculate the area of cross-section of a wire if its length is 1.0 m, ...

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  20. (a) Define resistivity. Write an expression for the resistivity of a s...

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