Home
Class 10
PHYSICS
Why are coils of electric toasters and e...

Why are coils of electric toasters and electric irons made of an alloy rather than a pure metal ?

Promotional Banner

Topper's Solved these Questions

  • ELECTRICITY

    LAKHMIR SINGH & MANJIT KAUR|Exercise Very Short Answer Type Questions|1 Videos

  • ELECTRICITY

    LAKHMIR SINGH & MANJIT KAUR|Exercise Short Answer Type Questions|2 Videos

  • ELECTRICITY

    LAKHMIR SINGH & MANJIT KAUR|Exercise Sample Problem|1 Videos

  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    LAKHMIR SINGH & MANJIT KAUR|Exercise NCERT BOOK|2 Videos

Similar Questions

Explore conceptually related problems

What are the factors on which resistance of a conductor depends? Why are coils of electric toasters and electric irons made of an alloy rather than that of a pure metal?

Explain the following : (a) Why is tungsten used almost axclusively for filament of incandescent lamp ? (b) Why are the conductors of electric heating devices, such as toaster and electric irons, made of an alloy rather than a pure metal ? ( c) Why is the series arrangement not used for domestic circuits ? (d) How does the resistance of a wire vary with its cross-sectional area ? (e ) Why are copper and aluminimum wires usually employed for electricity transmission.

What is the difference between the terms overloading and short-circuiting? Why are coils of electric heaters made of an alloy rather than a pure metal?

LAKHMIR SINGH & MANJIT KAUR-ELECTRICITY -Exercise
  1. What is nichrome? State its one use.

    Text Solution

    |

  2. Why is nichrome used as a heating element ?

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  18. The resistance of a wire of length 330m and cross-section area 1.0 mm^...

    Text Solution

    |

  19. When the diameter of a wire is doubled, its resistance becomes:

    Text Solution

    |

  20. If the resistance of a certain copper wire is 1Omega, then the resista...

    Text Solution

    |