Home
Class 12
PHYSICS
The temperature coefficient of resistanc...

The temperature coefficient of resistance of an alloy used for making resistor is

A

small and positive

B

small and negative

C

large and positive

D

large and negative

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    DC PANDEY|Exercise Match the columns|4 Videos

  • COMMUNICATION SYSTEM

    DC PANDEY|Exercise Subjective|11 Videos

  • ELECTROMAGNETIC INDUCTION

    DC PANDEY|Exercise Medical entrances gallery|25 Videos

Similar Questions

Explore conceptually related problems

The resistance of an alloy

The temperature coefficient of resistance of a conductor is

The temperature coefficient of resistance of a semiconductor

The temperature coefficient of resistance of a semi conductor is

The positive temperature coefficient of resistance is for

It is desired to make a 20.0Omega coil of wire whose temperature coefficient of resistance is zero. To do this, a carbon resistor of resistance R_(1) is placed in series with an iron resistor of resistance R_(2) . The proportion of iron and carbon are so chosen that R_(1) +R_(2)= 20 Omega for all temperatures near 20^@C . Find the values of R_(1) and R_(2) . Temperature coefficient of resistance for carbon, alpha_(C)= - 0.5 xx 10^(-3)//^(@)C and that of iron is alpha_(Fe) =5 xx 10^(-3)//^(@)C .

Two resistors with temperature coefficients of resistance alpha_1 and alpha_2 have resistances R_(01) and R_(02) at 0^@C . Find the temperature coefficient of the compound resistor consisting of the two resistors connected. a.. In series and b. in paralllel

DC PANDEY-CURRENT ELECTRICITY-Medical entrances gallery
  1. In a uniform ring of resistance R there are two points A and B such th...

    Text Solution

    |

  2. The dimensions of mobility of charge carriers are

    Text Solution

    |

  3. The temperature coefficient of resistance of an alloy used for making ...

    Text Solution

    |

  4. A wire of resistance 4 Omega is stretched to twice its original length...

    Text Solution

    |

  5. A carbon film resistor has cololur code green, black, violet, gold. Th...

    Text Solution

    |

  6. A uniform wire of resistance 9 Omega is joined end-to-end to from a ci...

    Text Solution

    |

  7. The equivalent resistance of two resistor connected in series is 6 Ome...

    Text Solution

    |

  8. Six resistance are connected as shown in figure. If total current flow...

    Text Solution

    |

  9. Four cells, each of emf E and internal resistance r, are connected in ...

    Text Solution

    |

  10. A circuit consists of three batteries of emf E(1) = 1V, E(2)=2V and E(...

    Text Solution

    |

  11. Two resistors of resistances 2Omega and 6Omega are connected in parall...

    Text Solution

    |

  12. The resistance in the two arms of the meter bridge are 5 Omega and R O...

    Text Solution

    |

  13. A potentiometer circuit has been setup for finding. The internal resis...

    Text Solution

    |

  14. In a ammeter 0.2% of main current passes through the galvanometer. If ...

    Text Solution

    |

  15. In a Wheatstone's bridge, three resistances P,Q and R connected in the...

    Text Solution

    |

  16. An electron in potentiometer experiences a force 2.4xx10^(-19)N. The l...

    Text Solution

    |

  17. A galvanometer having internal resistance 10 Omega required 0.01 A for...

    Text Solution

    |

  18. In potentiometer experiment, a cell of emf 1.25 V gives balancing leng...

    Text Solution

    |

  19. Potentiometer measures the potential difference more accurately than a...

    Text Solution

    |

  20. In a potentiometer experiment the balancing with a cell is at length 2...

    Text Solution

    |