Home
Class 10
PHYSICS
The resistivity does not change if :...

The resistivity does not change if :

A

the material is changed

B

the temperature is changed

C

the shape of the resistor is changed

D

both material and temperature are changed

Text Solution

Verified by Experts

The correct Answer is:
C
Resistivity depends on the nature of the material and the temperature but does not depend on the shape of the resistor.
Promotional Banner

Topper's Solved these Questions

  • LIGHT : REFLECTION AND REFRACTION

    NCERT EXEMPLAR|Exercise Light : Reflection And Refraction|38 Videos

Similar Questions

Explore conceptually related problems

A carbon and an aluminimum wire are connected in series.If the combination has resistance of 27 ohm at 0^(@)C ,what is the resistance of each wire at 0^(@)C so that the resistance of the combination does not change with temperature ? [alpha_(C ) = -0.5 xx 10^(-3)(.^@C)^(-1) and alpha_(A) = 4 xx 10^(-3)(.^@C)^-1] .

A carbon and an aluminium wire are connected in series. If the combination has resistance of 30Omega at 30^@C , what is the resistance of each wire at 0^@C so that resistance of the combination does not change with temperature. (a_c=-0.5 times 10^-3//^@C,a_A=4 times 10^-3//^@C )

How does the ratio of resistivity to conductivity changes when temperature of a conductor is increased?

The mass of a body does not change with change in _____.

The mass of a body does not change with change in _____.

NCERT EXEMPLAR-ELECTRICITY-Electricity
  1. A student carries out an experiment and plots the V-I graphs of three ...

    Text Solution

    |

  2. If the current I through a resistor is increased by 100% (assume that ...

    Text Solution

    |

  3. The resistivity does not change if :

    Text Solution

    |

  4. In an electrical circuit three incandescent bulbs A,B and C of rating ...

    Text Solution

    |

  5. In an electrical circuit, two resistors of 2 Omega and 4 Omega respect...

    Text Solution

    |

  6. An electric kettle consumes 1 kW of electric power when operated at 22...

    Text Solution

    |

  7. Two resistors of resistances 2 Omega and 4 Omega when connected to a b...

    Text Solution

    |

  8. Unit of electric power may also be expressed as :

    Text Solution

    |

  9. A child has drawn the electric circuit to study Ohm's law as shown in ...

    Text Solution

    |

  10. Three 2 Omega resistors, A, B and C are connected as shown in figure. ...

    Text Solution

    |

  11. Should the resistance of an ammeter be low or high ? Give reason.

    Text Solution

    |

  12. Draw a circuit diagram of an electric circuit containing a cell, a key...

    Text Solution

    |

  13. How does use of a fuse-wire protect electrical appliances ?

    Text Solution

    |

  14. What is electrical resistivity ? In a series electrical circuit compri...

    Text Solution

    |

  15. What is the commercial unit of electrical energy ? Represent it in ter...

    Text Solution

    |

  16. (a) A current of 1 A flows in a series curcuit containing an electric ...

    Text Solution

    |

  17. Why is parallel arrangement used in domestic wiring ?

    Text Solution

    |

  18. B1,B2 and B3 are three identical bulbs connected as shown in (fig. 3.4...

    Text Solution

    |

  19. Three incandecent bulbs of 100 W each are connected in series in an el...

    Text Solution

    |

  20. State Ohm's law ? How can it be verified experimentally ? Does it hold...

    Text Solution

    |