Home
Class 12
PHYSICS
A glavanometer of 50 Omega resistance...

A glavanometer of `50 Omega` resistance has 25 divisions. A current of `4xx10^(-4)` A gives a deflection of one division. To convert this galvanometer into a voltmeter having a range of `25 V`, it should be connected with a resistance of

A

`245Omega` in parallel

B

`2550Omega` in series

C

`2450Omega` in series

D

`2500Omega` in parallel.

Text Solution

Verified by Experts

The correct Answer is:
3

According to question 25=`I(R+R_(g))`
` =(4xx10^(-4)xx25)(R+50)`
`rArr R+50=2500rArrR=2450Omega`
Promotional Banner

Topper's Solved these Questions

  • CIRCULAR MOTION

    ALLEN|Exercise EXERCISE (J-A)|6 Videos

  • GEOMETRICAL OPTICS

    ALLEN|Exercise subjective|14 Videos

Similar Questions

Explore conceptually related problems

A galvanometer of 50 ohm resistance has 25 divisions. A current of 4xx10^(-4) ampere gives a deflection of one division. To convert this galvanometer into a voltmeter having a range of 25 volts, it should be connected with a resistance of :

A galavanometer, whose resistance is 50 ohm has 25 divisions in it. When a current of 4xx10^(-4) A passes through it,its needle (pointer) deflects by one division. To use this galvanometer as a volmeter of range 2.5V , it is should be connected to a resistance of :

A galvanometer having a resistance of 100 Omega has 25 divisions. A current of 0.4 mA deflect the pointer of the galvanometer into a voltmeter of 0 to 25 V, it should be connected with a resistance of

A galvanometer with 50 divisions on the scale has a resistance of 25 Omega . A current of 2 xx 10^-4 A gives a deflection of one scale division. The additional series required to convert it into a voltmeter reading up to 25 V is.

A galvanometer coil has a resistance of 50 Omega and the meter shows full scale deflection for a current of 5 mA . This galvanometer is converted into a voltmeter of range 0 - 20 V by connecting

A galvanometer having internal resistance 10 Omega required 0.01 A for a full scale deflection. To convert this galvanometer to a voltmeter of full scale deflection at 120 V, we need to connect a resistance of

A galvanometer coil has a resistance of 15 Omega and the metre shows full scale deflection for a current of 4 mA. To convert the meter into a voltmeter of range 0 to 18 V, the required resistance is

A galvanometer has a resistance of 100 Omega . A current of 10^(-3) A pass through the galvanometer How can it be converted into (A) ammeter of range 10A and (b) voltmeter of range 10v

ALLEN-CURRENT ELECTRICITY-All Questions
  1. A battery is charged at a potential fo 15 V for 8 h when the current f...

    Text Solution

    |

  2. Five equal resistances each of resistance R are connected as shown in ...

    Text Solution

    |

  3. A glavanometer of 50 Omega resistance has 25 divisions. A current o...

    Text Solution

    |

  4. A 6 V battery is connected to the terminals of a 3 m long wire of unif...

    Text Solution

    |

  5. The device used for measuring potential difference is known as:

    Text Solution

    |

  6. Find potential of J with:-

    Text Solution

    |

  7. Eels are able to generate current with biological cells called electro...

    Text Solution

    |

  8. N batteries each of emf E and internal resistance r are first connecte...

    Text Solution

    |

  9. Two metallic s pheres of radii R(1) and R(2) are connected b y a thin ...

    Text Solution

    |

  10. When the power delivered by a 100 volt battery is 40 watts the equival...

    Text Solution

    |

  11. Two batteries, one of emf 18V and internal resistance 2Omega and the o...

    Text Solution

    |

  12. When a wire of uniform cross-section a, length l and resistance R is ...

    Text Solution

    |

  13. For the network shown in the figure the value of the current i is

    Text Solution

    |

  14. In a potentiometer experiment it is found that no current passes throu...

    Text Solution

    |

  15. A potentiometer wire has resistance 40Omega and its length is 10m. It ...

    Text Solution

    |

  16. A 2^(@)C rise in temperature is observed in a conductor passing a curr...

    Text Solution

    |

  17. If a uniform wire of resistance R is uniformly strethced to n times th...

    Text Solution

    |

  18. In the circuit shown if a conducting wire is connected between points ...

    Text Solution

    |

  19. The emfs and resistance in the circuit (as shown in the figure) have t...

    Text Solution

    |

  20. Electric field inside a copper wire of length 10 meter, resistance 2 o...

    Text Solution

    |