Home
Class 12
PHYSICS
A galvanometer of resistance 50 Omega is...

A galvanometer of resistance `50 Omega` is connected to a battery of 8 V along with a resistance of `3950 Omega` in series. A full scale deflection of 30 divisions is obtained in the galvanometer. In order to reduce this deflection to 15 divisions, the resistance in series should be .... `Omega`.

A

1950

B

7900

C

2000

D

7950

Text Solution

Verified by Experts

The correct Answer is:
D
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

A galvanometer of resistance 50Omega is connected to a b attery of 3V alongwith a resistance of 2950Omega in series. A full scale deflection of 30 division is obtained in the galvanometer in order to reduce this deflection to 20 division. The resistance in sereis. should be:-

A galvanometer of resistance 50 Omega is connected to a battery of 3 V along with resistance of 2950 Omega in series. A full scale deflection of 30 divisions is obtained in the galvanometer. In order to reduce this deflection to 20 division the above series resistance should be

A galvanometer of resistance 30 2 is connected to a battery of emf 2 V with 1970 Q resistance in series. A full scale deflection of 20 divisions is obtained in the galvanometer. To reduce the deflection to 10 divisions, the resistance in series required is

A galvanometer of resistance 25Omega is connected to a battery of 2V along with a resistance of 3000Omega . In this case, a full - scale deflection of 30 units is obtained in the galvanometer. In order or reduce this deflection to 10 units, how much more resistance ("in "Omega) should be added to the circuit in series?

A galvanometer of resistance 25Omega is connected to a battery of 2 volt along with a resistance in series. When the value of this resistance is 3000Omega , a full scale deflection of 30 units is obtained in the galvanometer. In order to reduce this deflection to 20 units, the resistance in series will be

A galvanometer having 20 division scale and 50Omega resistance is connected in series to a cell of e.m.f. 1*5V through a resistance of 100Omega , shows full scale deflection. The figure of merit of the galvanometer in microampere/division is

DC PANDEY-CURRENT ELECTRICITY-Medical entrances gallery
  1. The slope of the graph showing the variation of potential difference V...

    Text Solution

    |

  2. Two wires of the same dimensions but resistivities rho(1) and rho(2) a...

    Text Solution

    |

  3. A galvanometer of resistance 50 Omega is connected to a battery of 8 V...

    Text Solution

    |

  4. Choose the correct statement.

    Text Solution

    |

  5. A metal plate weighting 750g is to be electroplated wiwth 0.05% of it...

    Text Solution

    |

  6. A DC ammeter has resistance 0.1 Omega and its current ranges 0-100 A. ...

    Text Solution

    |

  7. The current I shown in the circuit is

    Text Solution

    |

  8. A metal wire of circular cross-section has a resistance R(1). The wire...

    Text Solution

    |

  9. Consider the combination of resistor, The equivalent resistance b...

    Text Solution

    |

  10. A potentiometer wire of length 100 cm having a resistance of 10 Omega ...

    Text Solution

    |

  11. Three resistances 2 Omega, 3 Omega and 4 Omega are connected in parall...

    Text Solution

    |

  12. Four identical cells of emf epsilon and internal resistance r are to b...

    Text Solution

    |

  13. In the circuit shown alongside, the ammeter and the voltmeter redings ...

    Text Solution

    |

  14. The resistance of a bulb filmanet is 100Omega at a temperature of 100^...

    Text Solution

    |

  15. In a uniform ring of resistance R there are two points A and B such th...

    Text Solution

    |

  16. The dimensions of mobility of charge carriers are

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |