Home
Class 12
PHYSICS
The solids which have negative temperatu...

The solids which have negative temperature coefficient of resistance are:

A

Metals

B

Insulators only

C

Semiconductors only

D

Insulators and semiconductors

Text Solution

Verified by Experts

The correct Answer is:
D
For metals temperature coefficient of resistance is positive. While for insulators and semiconductors, temperature coefficient of resistance is negative.
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    ERRORLESS|Exercise ASSERTION AND REASON|26 Videos

  • CURRENT ELECTRICITY

    ERRORLESS|Exercise NCERT BASED QUESTIONS (HEATING EFFECT OF CURRENT)|67 Videos

  • ATOMIC AND NUCLEAR PHYSICS

    ERRORLESS|Exercise Assertion and Reason|23 Videos

  • ELECTROMAGNETIC INDUCTION

    ERRORLESS|Exercise ASSERTION & REASON|20 Videos

Similar Questions

Explore conceptually related problems

The positive temperature coefficient of resistance is for

Which of the following has negative temperature coefficient of resistance?

The temperature coefficient of resistance of a conductor is

Assertion : A pure semiconductor has negative temperature coefficient of resistance. Reason: On raising the temperature, more charge carriers are released,. conductance increases and resistance decreases.

The temperature coefficient of resistance of a semiconductor

The temperature coefficient of resistance of a semi conductor is

Two wires of resistance R_(1) and R_(2) have temperature coeficient of resistance alpha_(1) and alpha_(2) respectively. These are joined in series. The effeictive temperature coefficient of resistance is

ERRORLESS-CURRENT ELECTRICITY-PAST YEARS QUESTIONS
  1. Ten identical cells connected is series are needed to heated a w...

    Text Solution

    |

  2. What will happen when a 40 watt 220 volt lamp and 100 watt-220 volt la...

    Text Solution

    |

  3. For ensuring dissipation of same energy in all three resistors (R(1), ...

    Text Solution

    |

  4. Two heating wires of equal length are first con nected in series and t...

    Text Solution

    |

  5. A 12 HP motor has to be operated 8 hours / day . How much will it cost...

    Text Solution

    |

  6. A filament bulb (500 W, 100 V) is to be used in a 230 V main supply. W...

    Text Solution

    |

  7. The charge flowing through a resistance R varies with time t as Q = at...

    Text Solution

    |

  8. which of the following acts as a circuit protection device?

    Text Solution

    |

  9. Six similar bulbs are connected as shown in the figure with a DC sourc...

    Text Solution

    |

  10. The solids which have negative temperature coefficient of resistance a...

    Text Solution

    |

  11. which of the following graph represents the variation of resistivity (...

    Text Solution

    |

  12. The colour code of a resistance is given below: The values of res...

    Text Solution

    |

  13. A charged particle having drift velocity of 7.5xx10^(-4)ms^(-1) in ele...

    Text Solution

    |

  14. A wire connected in the left gap of a meter bridge balance a 10Omega r...

    Text Solution

    |

  15. In a potentiometer circuit a cell of EMF 1.5V gives balance point at 3...

    Text Solution

    |

  16. The effective resistance of a parallel connection that consists of fou...

    Text Solution

    |

  17. Column I- gives certain physical terms associated with flow of current...

    Text Solution

    |

  18. Three resistors having resistances r(1), r(2) and r(3) are connected a...

    Text Solution

    |

  19. A series LCR circuit containing 5.0 H inductor, 80 mu F capacitor and ...

    Text Solution

    |

  20. Two conducting circular loops of radii R1 and R2 are placed in the sam...

    Text Solution

    |