Home
Class 12
PHYSICS
The resistance of a thin silver wire is ...

The resistance of a thin silver wire is 1.0 `Omega` at `20^@C`. The wire is placed in liquid bath and its resistance rises to 1.2 `Omega`. What is the temperature of the bath ? (Here `alpha=10^-2//^@C`)

Text Solution

Verified by Experts

Here change in resistance is small so we can apply
`R=R_0(1+alpha/_\theta)`
`rArr1.2=1xx(1+10^-2 /_\theta)`
`rArr/_\theta=20^@C`
`rArrtheta-20=20`
`rArrtheta=40^@C` Ans.
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    MOTION|Exercise EXERCISE -1 (SECTION -A Definition of Current , Current Density , Drift Velocity )|8 Videos

  • CURRENT ELECTRICITY

    MOTION|Exercise EXERCISE -1(SECTION B- Resistance & resistivity , Ohms law +VI (Volt - curr.) Characteristics + Colour Code + Temp . Dependence|8 Videos

  • CURRENT ELECTRICITY

    MOTION|Exercise EXERCISE -3 SECTION -B (PREVIOUS YEAR PROBLEMS JEE MAIN)|42 Videos

  • CONSTRAINED MOTION

    MOTION|Exercise EXAMPLES|12 Videos

  • ELASTICITY

    MOTION|Exercise EXERCISE -3|60 Videos

Similar Questions

Explore conceptually related problems

The resistance of a thin silver wire is 1,0 omega" at" 20^underline(@)C . The wire is placed in liquid bath and its resistance rises to 1.2omega . What is the temperature of the bath ? (Here alpha=10^(-2)//.^(underline(o))C)

The resistance of a thin silver wire is 1.0 Omega at 20^@C . The wire is placed in a liquid bath and its resistance rises to 1.2 Omega . What is the temperature of the bath? alpha for silver is 3.8xx10^03//(.^(@) C)

The resistance of a platinum wire is 15 Omega at 20^(@)C . This wire is put in hot furnace and lthe resistance of the wire is found to be 40 Omega . Find the temperature of the hot furnace if temperature coefficient of resistance of platinum is 3.6 xx 10^(-3)^(0)C^(-1)

The resistance of wire is 20 Omega . The wire is stretched to three times its length. Then the resistance will now be

The resistance of a wire is 2 Omega . The wire is stretched to doubel its length. Now the resistance of the wire will become

The resistance of a 50 cm long wire is 10 Omega . The wire is stretched of uniform wire of length 100 cm. The resistance now will be

A conducting wire has a resistance of 5 Omega "at" 0^@C and 5.6 Omega "at" 100 ^@C . When the wire is inserted in a hot bath with temperature T^@C , its resistance is 5.9 Omega . What is the value of T ?

A platinum resistance thermometer has a resistance of 50 Omega at 20^(@)C . When dipped in a liquid the resistance becomes 76.8 Omega . The temperature coefficient of resistance for platinum is alpha = 3.92 xx 10^(-3)//""^(@)C . The temperature of the liquid is

MOTION-CURRENT ELECTRICITY-EXAMPLE
  1. If a wire is stretched to double its length, find the new resistance ...

    Text Solution

    |

  2. The wire is strectched to increase the length by 1%. Find the percenta...

    Text Solution

    |

  3. The resistance of a thin silver wire is 1.0 Omega at 20^@C. The wire i...

    Text Solution

    |

  4. A conducting wire has resistance of 10 Omega at 0^@C and alpha is (1/2...

    Text Solution

    |

  5. Calculate current (i) flowing in part of the circuit shown in figure?

    Text Solution

    |

  6. If bulb rating is 100 walt and 220 V then determine (a) Resistance o...

    Text Solution

    |

  7. What is the meaning of 10 Amp. Hr ?

    Text Solution

    |

  8. In the given electric circuit find (a) current (b) power outp...

    Text Solution

    |

  9. In the figure given beside find out the current in the wire BD

    Text Solution

    |

  10. Find the current in each wire

    Text Solution

    |

  11. Find relation in between current i1,i2,i3,i4,i5 and i6.

    Text Solution

    |

  12. Find the current in each wire

    Text Solution

    |

  13. Find the potential at point A

    Text Solution

    |

  14. Find the current in the circuit

    Text Solution

    |

  15. Find the current in each wire applying only Kirchhoff voltage law

    Text Solution

    |

  16. Which electrical elements are connected in series

    Text Solution

    |

  17. Find the current in the circuit

    Text Solution

    |

  18. In the figure shown B(1),B(2)" and "B(3) are three bulbs rated as (200...

    Text Solution

    |

  19. When two resistors are in parallel combination then determine i(1)" an...

    Text Solution

    |

  20. Find current passing through the battery and each resistor.

    Text Solution

    |