Home
Class 12
PHYSICS
A voltmeter which can measure 2 V iscons...

A voltmeter which can measure 2 V isconstructed by using a galvanometer of resistance `12 Omega` and that produces maximum deflection for the current of 2mA. Then the resistance R is

A

`888 Omega`

B

`988 Omega`

C

`898 Omega`

D

`999 Omega`

Text Solution

Verified by Experts

The correct Answer is:
B
`R=V/I_(g)-G`
Putting `V=2 V, I_(g)= 2 mA= 2 xx 10^(-3) A, G=12 Omega`.
`therefore R=2/(2 xx 10^(-3)) -12 = 1000 -12=988 Omega`
Promotional Banner

Topper's Solved these Questions

  • MOVING CHARGES AND MAGNETISM

    NCERT FINGERTIPS ENGLISH|Exercise Higher Order Thinking Skills|8 Videos

  • MOVING CHARGES AND MAGNETISM

    NCERT FINGERTIPS ENGLISH|Exercise NCERT Exemplar|6 Videos

  • MOVING CHARGES AND MAGNETISM

    NCERT FINGERTIPS ENGLISH|Exercise Torque On Current Loop, Magnetic Dipole|19 Videos

  • MAGNETISM AND MATTER

    NCERT FINGERTIPS ENGLISH|Exercise NCERT Exemplar|5 Videos

  • NUCLEI

    NCERT FINGERTIPS ENGLISH|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

A multirange voltmeter can be constructed by using a galvanometer circuit as shown in figure. We want to construct a voltmeter that can measure 2V, 20V and 200V using a galvanometer of resistance 10Omega and that produces maximum deflection for current of 1mA . Find R_1 , R_2 and R_3 that have to be used.

A galvanometer has resistance 1 Omega . Maximum deflection current through it is 0.1 A

(a) Briefly explain how a galvanometer is converted into an ammeter. (b) A galvanometer coil has a resistance of 15 Omega and it shows full scale deflection for a current of 4 mA. Convert it into an ammeter of range 0 to 6 A.

A galvanometer measures current which passes through it. A galanometer can measure typically carrent of order of mA. To be able to measure currents of the order of amperes of main current, a shunt resistance 'S' is connected in parallel with galvanometer. If resistance of galavonometer is 10Omega and maximum current i_(g) is 10mA then the shunt resistance required so that the main current 'I' can be upto 1A is (in Omega )

When a current of 5mA is passed through a galvanometer having a coil of resistance 15Omega , it shows full sacle deflection. The value of the resistance to be put in series with the galvanometer to convert it into a voltmeter of range 0-10V is:

A moving coil galvanometer of resistance 100Omega is used as an ammeter using a resistance 0.1 Omega . The maximum diflection current in the galvanometer is 100 muA . Find the minimum current in the circuit so that the ammeter shows maximum deflection

A galvanometer of resistance 1000Omega gives full-scale deflection for a current of 1mA. To measure a P.D of 10V, the resistance to be connected with the galvanometer is

An ammeter is to be constructed which can read currents up to 2.0A. If the coil has a resistance of 25(Omega) and takes 1mA for full-scale deflection, what should be the resistance of the shunt used?

The ammeter (A) and voltmeter (V) in the given circuit are ideal but the galvanometer has a resistance of 2 Omega In steady state

A battery of emf 12 V and internal resistance 2Omega is connected in series with a tangent galvanometer of resistance 4Omega . The deflection is 60^@ when the plane of the coil is along the magnetic meridian . To get a deflection of 30^@ , the resistance to be connected in series with the tangent galvanometer is

NCERT FINGERTIPS ENGLISH-MOVING CHARGES AND MAGNETISM -The Moving Coil Galvanometer
  1. In a moving coil galvanometer the deflection (phi) on the scale by a p...

    Text Solution

    |

  2. Two moving coil metres M(1) and M(2) have the following particular R(1...

    Text Solution

    |

  3. If the current sensitivity of a galvanometer is doubled, then its volt...

    Text Solution

    |

  4. A galvanometer can be converted into an ammeter by connecting

    Text Solution

    |

  5. A galvanometer of resistance 70 Omega, is converted to an ammeter by a...

    Text Solution

    |

  6. If the galvanometer current is 10 mA, resistance of the galvanometer i...

    Text Solution

    |

  7. A galvanometer of resistance 40 Omega gives a deflection of 5 division...

    Text Solution

    |

  8. In the given circuit, a galvanometer with a resistance of 70 Omega is ...

    Text Solution

    |

  9. A galvanometer having a resistance of 50 Omega, gives a full scale def...

    Text Solution

    |

  10. The conversion of a moving coil galvanometer into a voltmeter is done ...

    Text Solution

    |

  11. The resistance of a galvanometer is 10 Omega. It gives full-scale defl...

    Text Solution

    |

  12. A voltmeter which can measure 2 V isconstructed by using a galvanomete...

    Text Solution

    |

  13. The value of current in the given circuit if the ammeter is a galvanom...

    Text Solution

    |

  14. A galvanometer coil has a resistance of 15 Omega and the metre shows f...

    Text Solution

    |

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

    Text Solution

    |

  16. The range of voltmeter of resistance 300 Omega is 5 V. The resistance ...

    Text Solution

    |