Home
Class 12
PHYSICS
The resistance wires on joining in paral...

The resistance wires on joining in parallel, the resultant resistance is `(6)/(5)Omega`. One of the wire breaks, the effective resistance is `2Omega`. The resistance of the broken wire is

A

II, V

B

VI

C

I, III

D

IV

Text Solution

Verified by Experts

The correct Answer is:
A, D

By COLM `0 = m_(A) v_(A) + m_(B) v_(B), vec(v)_(B) = -(m_(A))/(m_(B)) vec(v)_(A)`
Both velocity are opposite in direction `:.` II, IV, V
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    ALLEN|Exercise EXERCISE-IV A|32 Videos
  • CURRENT ELECTRICITY

    ALLEN|Exercise EXERCISE-IV B|14 Videos
  • CURRENT ELECTRICITY

    ALLEN|Exercise EX.II|66 Videos
  • CIRCULAR MOTION

    ALLEN|Exercise EXERCISE (J-A)|6 Videos
  • GEOMETRICAL OPTICS

    ALLEN|Exercise subjective|14 Videos

Similar Questions

Explore conceptually related problems

Two resistance wires on joining in parallel the resultant resistance is ohms (6)/(5) ohms. One of the wire breaks, the effective resistance is 2 ohms . The resistance of the broken wire is

Two resistances are joined in parallel whose resultant is 6//8 ohm . One of the resistance wire is broken and the effective resistance becomes 2 Omega . Then the resistance in ohm of the wire that got broken was

The resistivity of a wire

A wire of resistance 6R is bent in the form of a circle. What is the effective resistance between the ends of the diameter?

A wire has resistance of 24 Omega is bent in the following shape. The effective resistance between A and B is

A resistance 10 Omega is stretched to twice its original length . The resistance of the stretched wire is

What resistance must be connected to a 15 Omega resistance to provide an effective resistance of 6 Omega ?

What is the resistance between P and Q in the following circuit? Each resistance is of 1 Omega and the wire between eb and bd have resistance 0.5Omega each.

The temperature coefficient of resistance of a wire is 0.00125 per ""^(@)C . At 300 K, its resistance is 1Omega . The resistance of the wire will be 2Omega at

A uniform wire of resistance 18 Omega is bent in the form of a circle. The effective resistance across the points a and b is

ALLEN-CURRENT ELECTRICITY-EXERCISE-III
  1. Two cells, each of emf E and internal resistance r are connected in pa...

    Text Solution

    |

  2. In a network as shown in the figure , the potential difference across ...

    Text Solution

    |

  3. There are 8.4xx10^(22) free electrons per cm^(3) in copper. The curren...

    Text Solution

    |

  4. In a typical wheatstone network the resistance in cyclic order are A=1...

    Text Solution

    |

  5. In the circuit shown below, the power developed in 6Omega resistor is ...

    Text Solution

    |

  6. A potentiometer having the potential gradient of 2 mV/cm is used to me...

    Text Solution

    |

  7. A microammeter has as resistance of 100 Omega and full scale range of ...

    Text Solution

    |

  8. In the circuit shown here, what is the value of the unknown resistor R...

    Text Solution

    |

  9. A battery has e.m.f. 4 V and internal resistance r . When this battery...

    Text Solution

    |

  10. In the circuit shows here, E(1) = E(2) = E(3) = 2V and R-(1) = R(2) = ...

    Text Solution

    |

  11. AB is a potentiometer wire of length 100cm and its resistance is 10ohm...

    Text Solution

    |

  12. Three resistance of values 2Omega,3Omega and 6Omega are to be connect...

    Text Solution

    |

  13. A battery of electro motive force E is connected in series with a resi...

    Text Solution

    |

  14. The resistance wires on joining in parallel, the resultant resistance ...

    Text Solution

    |

  15. The temperature coefficient of resistance of a wire is 0.00125 per ^@C...

    Text Solution

    |

  16. If specific resistance of a potentiometer wire is 10^(–7) (Omega) m an...

    Text Solution

    |

  17. The resistance of each arm of the wheat stone bridge is 10Omega. A r...

    Text Solution

    |

  18. Copper and silicon is cooled from 300 K to 60 K, the specific resistan...

    Text Solution

    |

  19. There is a current of 40 A in a wire of 10^(-6) square metre area of c...

    Text Solution

    |

  20. An ammeter and a voltmeter are joined in series to a cell. Their readi...

    Text Solution

    |