Home
Class 12
PHYSICS
Why do we prefer potentiometer with a lo...

Why do we prefer potentiometer with a longer bridge wire?

Text Solution

Verified by Experts

Potential gradient for a longer bridge wire is small and hence, the sensitivity of potentiometer is more.
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    MODERN PUBLICATION|Exercise REVISION EXERCISES (ADDITIONAL QUESTIONS)|11 Videos

  • CURRENT ELECTRICITY

    MODERN PUBLICATION|Exercise REVISION EXERCISES (FILL IN THE BLANKS)|10 Videos

  • CURRENT ELECTRICITY

    MODERN PUBLICATION|Exercise HIGHER ORDER THINKING SKILLS & ADVANCED LEVEL|10 Videos

  • ATOMS

    MODERN PUBLICATION|Exercise Chapter Practice Test|16 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST|15 Videos

Similar Questions

Explore conceptually related problems

Assertion: We prefer a potentiometer with a longer bridge wire. Reason : By doing this, the sensitivity of the bridge is increased because for longer wire potential drop per unit length will be small.

Potentiometer and meter bridge

Potentiometer and meter bridge

Potentiometer and metre bridge

The wire of potentiometer is made of

Why do we prefer a potentiometer to measure emf of a cell rather than a voltmeter ?

Why do you prefer the theatre than the cinema ?

Why do we group data?

Explain, why should the current be not passed through potentiometer wire for long time ?

MODERN PUBLICATION-CURRENT ELECTRICITY-REVISION EXERCISES (VERY SHORT ANSWER QUESTIONS)
  1. Two students A and B were asked to pick a resistor of 15 k Omega from ...

    Text Solution

    |

  2. A wire of resistance 5Omega is drawn out so that its length is increas...

    Text Solution

    |

  3. What is the largest voltage you can safely put across a resistor marke...

    Text Solution

    |

  4. Two conductors, one having resistance R and another 3R are connected i...

    Text Solution

    |

  5. Out of the two bubls marked 25W and 100W, which one has the higher res...

    Text Solution

    |

  6. A 150W and a 600W bulbs are joined in parallel to the mains. Out of th...

    Text Solution

    |

  7. Write two special characteristics a wire of electric heater should hav...

    Text Solution

    |

  8. The emf of a cell is always greater than its terminal voltage. Why? Gi...

    Text Solution

    |

  9. Name the device used for measuring the internal resistance of a second...

    Text Solution

    |

  10. Given three resistors of resistances 1 Omega, 2Omega and 3Omega. How w...

    Text Solution

    |

  11. The plot of the variation of potential difference across a combination...

    Text Solution

    |

  12. Two cells of emfs epsilon(1)and epsilon(2) and internal resistances ...

    Text Solution

    |

  13. Obtain the condition for bridge balance in Wheatstone's bridge.

    Text Solution

    |

  14. What is the condition for a Wheatstone bridge to be most sensitive?

    Text Solution

    |

  15. What is the principle of working of meterbridge?

    Text Solution

    |

  16. Assertion: A slide wire bridge is also called a metrebridge. Reason...

    Text Solution

    |

  17. What do a voltmeter connected to two terminals of a cell read: the emf...

    Text Solution

    |

  18. How can the sensitivity of a potentiometer be increased?

    Text Solution

    |

  19. Assertion A potentiometer is preferred over that of a voltmeter for me...

    Text Solution

    |

  20. Why do we prefer potentiometer with a longer bridge wire?

    Text Solution

    |