Home
Class 12
PHYSICS
The sensitivity of a potentiometer can b...

The sensitivity of a potentiometer can be increased by

A

increasing the emf of the cell.

B

increasing the length of the potentiometer wire.

C

decreasing the length of potentiometer wire.

D

none of the above.

Text Solution

Verified by Experts

The correct Answer is:
2
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    ALLEN|Exercise EXERCISE-V B|20 Videos
  • CIRCULAR MOTION

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

    ALLEN|Exercise subjective|14 Videos

Similar Questions

Explore conceptually related problems

Sensitivity of potentiometer can be increased by

How will the sensitivity of a potentiometer change with increase in current flowing through its wire?

In the figure a long uniform potentiometer wire AB is having a constant potential gradient along its length. The null points for the two primary cells of emfs epsilon_(1) " and " epsilon_(2) connected in the manner shown are obtained at a distance of 120 cm and 300 cm from the end A. Find (i) epsilon_(1)//epsilon_(2) and (ii) position of null point for the cell epsilon_(1) . How is the sensitivity of a potentiometer increased ?

The current sensitivity of a moving coil galvanometer can be increased by

Figure shows a potentiometer circuit, a cell of emf E_1 is balanced by length l' of the potentiometer wire. If this cell is replaced by another of emf E_2 , it is found that total length of potentiometer wire has to be increased by 50%, in order to have the same balance length (l'). Then E_1//E_2 is______.

Figure shows a potentiometer circuit, a cell of emf E_1 is balanced by length l' of the potentiometer wire. If this cell is replaced by another of emf E_2 , it is found that total length of potentiometer wire has to be increased by 50%, in order to have the same balance length (l'). Then E_1//E_2 is______.

A cell in the secondary circuit gives null deflection for 2.5 m length of a potentiometer having 10m length of wire. If the length of the potentiometer wire is increased by 1m without changing the cell in the primary, the position of the null point wil be

A potentiometer can be used to measure

The current sensitivity of a moving coil galvanometer increases by 20% when its resistance is increased by a factor 2. Calculate by what factor does the voltage sensitivity change?

The current sensitivity of a moving coil galvanometer increases by 20% when its resistance is doubled calculate, by what factor does the voltage sensitivity change?

ALLEN-CURRENT ELECTRICITY-EX.II
  1. If 2% of the main current is to be passed through the galvanometer of ...

    Text Solution

    |

  2. In the following circuit diagram the value of resistance X for the pot...

    Text Solution

    |

  3. The sensitivity of a potentiometer can be increased by

    Text Solution

    |

  4. A potential gradient is created in the wire by a standard cell for the...

    Text Solution

    |

  5. A voltmeter having a resistance of 998 is connected to a cell of emf 2...

    Text Solution

    |

  6. Ratio of amplitude for two wave is 10:11 .Find the ratio of intensity?

    Text Solution

    |

  7. A cell of e.m.f. 2V and negligible internal resistance is connected to...

    Text Solution

    |

  8. Potentiometer wire length is 10m, having a total resistance of 10Omega...

    Text Solution

    |

  9. P,Q is a uniform wire of resistance 2000Omega and M is the md point of...

    Text Solution

    |

  10. A student connects a voltmeters, ammeter and resistance according to t...

    Text Solution

    |

  11. A potentiometer wire of 10 m length and having a resistance of 1ohm/m ...

    Text Solution

    |

  12. If V(AB) is 4 V in the given figure, then resistance X will be

    Text Solution

    |

  13. For the network of resistance shown in the figure the equivalent resis...

    Text Solution

    |

  14. Ratio of amplitude for two wave is 1:6.Find the ratio of intensity?

    Text Solution

    |

  15. A current of two amperes is flowing through a cell of e.m.f. 5 volts ...

    Text Solution

    |

  16. 100 cells each of emf 5V and internal resistance 1 Omega are to be arr...

    Text Solution

    |

  17. Two resistance R(1) and R(2) are made of different material. The tempe...

    Text Solution

    |

  18. In the arrangement of resistances shown below, the effective resistanc...

    Text Solution

    |

  19. A potentiometer wire of length 100cm has a resistance of 10Omega. It i...

    Text Solution

    |

  20. Electromotive force of a cell is basically a

    Text Solution

    |